Study Note Test #1 PDF

​ Light energy moves like a wave. ​ The visible light we receive from sun is called white light ○​ Which contains all the colors of the rainbow. ○​ When it passes through a prism, it is refracted or bent. ​ Electromagnetic waves are like invisible energy waves that consist...

​ Light energy moves like a wave. ​ The visible light we receive from sun is called white light ○​ Which contains all the colors of the rainbow. ○​ When it passes through a prism, it is refracted or bent. ​ Electromagnetic waves are like invisible energy waves that consist of two parts working together, electric and magnetic fields. ​ The electric and magnetic parts create a wavelike motion measured in wavelengths. ○​ These waves travel at speed of light, making them super-fast messengers through space. ​ Infrared radiation, like radio and microwaves, are still invisible to us. These are heat, providing warmth from everything via sunlit day or warm glow of fireplace. ○​ Other examples include thermal imaging, where infrared is used in devices to capture heat signatures and in remote controls. ​ These waves are invisible to our eyes, but play a crucial role in triggering the synthesis of vitamin D in our skin. The skin, liver and kidneys work together to synthesize 1, 25-Diydroxy vitamin D. What is Electricity: ​ The movement of electrons from one atom to another along a conductor. ​ A form of energy that, when in motion, exhibits magnetic, chemical, or thermal effects. ​ Electricity does not occupy space or have mass (weight), so it is not matter. Electric Current: ​ The flow of electricity along a conductor ​ All materials can be classified as conductors or nonconductors depending on the ease with which an electric current can be transmitted through them. Conductor (material that conducts electricity) ​ Most metals are good conductors. Meaning electricity will pass through material easily. ​ Copper is a particularly good conductor and is used in electric wiring and electric motors. ​ Pure (distilled) water is a poor conductor, but the ions found in ordinary water, such as tap water, river, or lake, make it a good conductor. Nonconductor (Also known as an insulator) ​ A material that does not transit electricity ​ Rubber, silk, wood, glass, and cement are good insulators ​ Electric wires are composed of twisted metal threads (the conductor) covered with a rubber or plastic coating (the nonconductor or insulator) Complete Electric Circuit: ​ Path that negative and positive electric currents take from the generating source through the conductors and back to the generating source.  Types of Electric Current: Direct Current (DC) Alternating Current (AC) Constant, even flow Rapid and interrupted flow Travels in one direction Travels in two directions Produced by chemical means Produced by mechanical means + changes directions 60 times per second Direct Current: ​ Flashlights, cellphones, and cordless tools use the direct current produced by batteries. ○​ The battery in your car stores electric energy. (Sulfuric Acid) Inverter - An apparatus that changes DC to AC. ​ Inverters usually have a plug + a cord. Allow you to use appliances outside of salon, spa, barbershop, or home that normally would have to be plugged into an electric wall outlet. ○​ The phone charger in a car is an example of an inverter. Alternating Current: ​ Corded hair dryers, curling irons, electric files, and table lamps that plug into a wall outlet use alternating current. Rectifier - An apparatus that changes AC to DC ○​ Phone chargers use rectifier to change AC from electric wall outlet to DC needed to recharge their batteries. Flow of Electric Current: ​ Can be compared to water flowing through a hose. Without pressure, neither water nor electricity would flow. Watt (Unit of power is Watt) ​ A unit that measures how much electric energy is being used in one second. ​ A 40-watt light bulb uses 40 watts of energy per second. Ohm: ​ A unit that measures the resistance of an electric current. ​ Current will not flow through a conductor unless force is stronger than the resistance. Kilowatt (1000 watts) ​ The electricity in your house is measured in kilowatts per hour (kwh) ​ A 1000-watt hair dryer uses 1000 watts of energy per second. Milliampere (mA) ​ Is 1/1,000 of an ampere ​ Current used for facials is measured in mA; an ampere current would be too strong ​ If used for facials an ampere current would damage the skin or body Ampere (Amp) ​ The unit that measures the strength of an electric current. ​ Just as a hose must be large enough to carry amount of water flowing through it, a wire must be large enough to carry the amount of electricity (amps) flowing through it. ​ Hairdryer rated at 12 amps must have cord thicker than one rated at half; or else, cord might overheat + start fire. Higher amp rating means greater number of electrons + stronger current Volt (Voltage) ​ Unit that measures pressure or force that pushes electric current forward through conductor ​ Normal electric wall sockets that power your tools are 120 volts. Most air conditioners and clothes dryers run on 240 volts. A higher voltage indicates more power. Electrical safety devices Fuse - ​ Prevents excessive current from passing through a circuit. ​ Designed to blow out or melt when wire turns too hot from overloading a circuit with a lot of current – when faulty equipment or too many appliances are connected to an electric source. ​ To reestablish circuit, disconnect appliance, check connections and insulation, insert new fuse, reconnect appliance. ​ Often found in older buildings that have not been renovated or modernized. Circuit Breaker - ​ Switch that auto interrupts or shuts off an electric circuit at first indication of an overload. ​ Replaced fuses in modern electric circuits. ​ Have all the safety features of fuses but do not require replacement and can simply be reset by switching the circuit breaker back on. ​ When a circuit breaker shuts off, you should disconnect the appliance and check all connections and insulation before resetting it. ​ If excessive current passes through circuit or fuse, breaker turns off to prevent overheating. Safety Devices: Grounding: ​ Completes an electric circuit and carries the current safely away ​ All electrical appliances must have at least 2 rectangular electrical connections, or prongs, on the plug (two-prong plug) ○​ The two prongs supply electric current to circuit. One is slightly larger than the other. This guarantees that the plug can be inserted into an outlet only one way and protects you and your client from electric shock in the event of a short circuit. ○​ The hot wire is the smaller of the two, and it is this prong that must be inserted into the outlet first. The larger, neutral prong completes the circuit and allows electricity to flow safely from the home’s electrical system to the appliance. ​ Some appliances have a third circular electric connection that is a grounding pin, Called a three-prong plug. The grounding pin is designed to guarantee a safe path for electricity and protect the user from electrical shock even if a wire comes loose. Appliances with a third circular grounding pin offer the most protection for you and your clients. Ground Fault Interrupter: ​ Designed to protect from electrical shock by interrupting household circuit when there is a leak in the circuit. Receptacles in bathrooms, kitchens, and some outside receptacles. ​ Designed to detect currents of a few milliamperes and trip a breaker at the receptacle or at the breaker panel to avoid a shock hazard. When it is working properly, a GFI has a green light from the socket, it can be reset with a “reset” button on the panel. Guidelines for the Safe Use of Electrical Equipment: ​ CSA approved ​ Register appliances ​ Do not overload ​ Use only one plug in each outlet; overloading may cause the circuit breaker to pop. ​ If more than one plug is needed in an area, use a power strip with a surge protector. ​ Do not touch two metal objects if powered ​ Do not alter plug ​ Don’t use a sparking appliance or outlet. If you see sparks when plugging or unplugging appliance, don’t use appliance or outlet until it’s approved by certified electrician ​ Check fire extinguishers. Electric Emergency - If you receive a light shock sensation while using, turning on or off, or plugging or unplugging an electrical appliance ​ Stop using the appliance immediately and turn it completely off. ​ Unplug it from the wall or turn off the circuit breaker to that outlet. ​ Replace the appliance or have it repaired by an authorized repair representative. ​ If similar issues occur with other appliances in the same outlet, discontinue use of that outlet until approved for use by a certified electrician. ​ If you drop an electrical appliance in water: ○​ If outlet is GFI protected, it will kill the circuit immediately and you may unplug appliance from wall, after releasing the appliance. Don’t have one hand in water and one at outlet - if the outlet is still live, your body will conduct the electricity. ○​ If outlet is not GFI protected, go to breaker box and flip circuit off. If unsure which circuit controls that outlet, it’s better to momentarily shut off power to entire shop until situation fixed. Once the power is off, unplug the item and then restore power. ○​ Never use an appliance that has been dropped in water. When to Seek Medical Care After an Electrical Shock: ​ Anytime during pregnancy ​ If you have burns on skin, open or has not healed well over time. Effects of Galvanic Current: Positive Pole (Anode) Cataphoresis Negative Pole (Cathode) Anaphoresis Produces acidic reactions Produces alkaline reactions Closes pores Opens pores Soothes nerves Stimulates and irritates the nerves Decreases blood supply Expands blood vessels Contracts blood vessels Softens tissue Hardens and firms’ tissues Microcurrent: ​ Extremely low level of electricity that mirrors the body’s natural electrical impulses. ​ Can be used for iontophoresis, firming, toning, soothing skin, and heal inflamed tissue. ​ Newer microcurrent devices have negative and positive polarity in one probe, not two. This allows client to relax than having to hold onto a probe during the service/treatment. ​ Microcurrent does not travel throughout entire body; it serves only area being treated. ​ Microcurrent can be effective in the following ways: ○​ Improves blood and lymph circulation ○​ Produces acidic and alkaline reactions ○​ Opens and closes hair follicles and pores ○​ Increases muscle tone and restores elasticity ○​ Reduces redness and inflammation ○​ Minimizes healing time for acne lesions. Improves natural protective barrier of skin. ○​ Increases metabolism Tesla High-Frequency Current (also known as violet ray) ​ Stimulates blood circulation ​ Increases elimination and absorption ​ Increases skin metabolism ​ Improves germicidal action ​ Relieves skin congestion ​ A thermal or heat-producing current with a high rate of oscillation or vibration. ​ Electrodes are made from glass or metal, and one electrode is used to perform a service Contraindications: ​ Should not be used on clients who are pregnant or have epilepsy or other seizure disorder, asthma, high blood pressure, sinus blockage, a pacemaker, or metal implants. ​ Clients should avoid contact with metal, such as chair arms, jewelry, and metal bobby pins, during the treatment, as a burn may occur if contact is made. Polarity: ​ Refers to the poles of an electric current, either positive or negative ​ The electrodes on many electrotherapy devices have one negatively charged pole, and one positively charged pole Anode - positive ➔​ Red and is marked with a p or a plus (+) sign Cathode - negative ➔​ Black and is marked with an N or a minus (-) sign ​ The negatively charged electrons from the cathode flow to the positively charged anode ​ If the electrodes are not marked, ask your instructor, manager, or supervisor to help you determine the positive and negative poles. Polarity of Solutions: ​ You need to always check labelling of products to identify polarity of ampoule or solution. ​ Slightly acidic pH products are considered positive and mostly used for iontophoresis. ​ If the products were positive, the client and esthetician would use the opposite electrodes. Technician holds the positive and client holds the negative. ​ Acid is less than 7 on the pH scale. ​ Alkaline pH products are considered negative and are used for desincrustation. ​ If product is negative, esthetician infuses the solution with the electrode set at negative and esthetician holds the negative electrode, while client holds the positive electrode. ​ Alkaline is greater than 7 on the pH scale. Electrical Currents in Esthetics: ​ Mechanical currents: alternating currents, positive and negative poles ​ Iontophoresis introduces water soluble products deep into the skin ​ Heating element heats when current flows (steamer) ​ Electromechanical currents pass through water based solutions. Galvanic system current, low level or direct current used for desincrustation and iontophoresis. Electrical Modalities: ​ Use of electrical currents to treat skin commonly referred to as electrotherapy. ​ Currents used in electrical facial and scalp treatments are called modalities. ​ Each modality produces a different effect on the skin. Electrode (also known as a probe) ​ An applicator for directing electric current from the electrotherapy device to clients skin ​ Made of carbon, glass, or metal ​ Each modality requires two electrodes–one negative and one positive— to conduct the flow of electricity through the body ​ Only exception is the Tesla high-frequency current, which uses a single electrode Electrotherapy: ​ The use of equipment for corrective and therapeutic benefits. Assists with: ○​ Skin analysis. ○​ Product penetration. ○​ Exfoliating the skin. ○​ Skin firming. ○​ Germicidal cleansing. ○​ Hydration. Contraindications: ​ Clients with heart conditions, pacemakers. ​ Metal implants, or braces. ​ Clients who are pregnant. ​ Clients with epilepsy or seizure disorders. ​ Clients who are afraid of electric current. ​ Clients with open or broken skin If in doubt, obtain approval from physician. ​ Most machines discussed will be used for about 5-10 minutes during a facial treatment. Hot Towel Cabinet: ​ Few warmers have UV lamps that reduce bacteria but not effective for disinfection. ​ Client towels, 2”x2”, 4"×4" wipes, and products can also be placed in hot towel cabinet. Contraindications and Precautions for Hot Towel Cabinets: ​ Extremely fragile or extremely sensitive skin. ​ Uncontrolled or advanced rosacea. ​ Open wounds or contraindicated skin conditions. ​ Plastic melts in hot towel warmers—use heat-resistant dishes to warm products. ​ With increased exfoliation or stimulation, use of hot towels may be contraindicated. ​ Wearing gloves is recommended Wood’s Lamp: ​ Filtered black light used to illuminate fungi, bacterial disorders, pigmentation problems, etc. ​ Lamp doesn’t emit short-wavelength UVB radiation (290–320 nm), doesn’t cause sunburn Skin Scopes: ​ Larger tools use UV light with interior mirror. Client + esthetician can look at client’s face. Best Practices of The Steamer: ​ Ozone affects respiratory system, can irritate eyes, possible short of breath + coughing. ​ Don’t let water level run low, as glass may break if no auto shutoff safety mechanism. ​ Some machines have automatic regulators that detect the water level. When it becomes too low or empty, a safety switch is triggered, turning off the machine. ​ Some machines have timers that shut off after the set time ​ Always keep a spare glass jar and rubber seal handy How to Safely + Effectively Use The Vacuum Machine (also known as suction machine): ​ Removes impurities, stimulate dermal layer, or machine-aided facial lymphatic massage. ​ Machine uses suction cups in different sizes and shapes, depending on use. Movement of cups across face and neck mimics contractions naturally made by the lymph vessels. ​ Can be used after desincrustation, and before extractions. ​ Can be used in place of massage. Maintenance for The Vacuum Machine: ​ Clean glass devices w/ soap + water, soak them in disinfectant of appropriate strength. ​ The filter at the end of the hose may have to be changed frequently, depending on use. ​ Store the tips wrapped in cloth in a covered storage area to protect from breakage. Galvanic Current: ​ Oldest form of electrotherapy ​ Direct Current ​ Galvanic current is used to create two significant reactions in esthetics: chemical desincrustation and ionic iontophoresis. ​ The galvanic machine converts the alternating current received from an electrical outlet into a direct current. Electrons are then allowed to flow continuously in the same direction, which creates a relaxation response. Effects of Using The Galvanic Machine: ​ Iontophoresis is used for introducing a water-soluble product into the skin. Contraindications to Galvanic: ​ Metal implants ​ Pacemaker ​ Heart conditions + High blood pressure, fever, or any infection ​ Braces ​ Epilepsy ​ Pregnancy ​ Diminished nerve sensibility due to diseases such as diabetes ​ Open or broken skin (wounds, new scars) or inflamed pustular acne ​ Couperose skin or rosacea ​ Chronic migraine headaches Best Practices and Contraindications for Desincrustation: ​ Don’t use negative galvanic current on skin with broken capillaries/pustular acne ​ Client with high blood pressure. ​ Metal implants. High Frequency Machine: ​ Uses alternating or sinusoidal current; smooth, repetitive current; to produce heat. ​ High-frequency oscillating current passes through a device allowing for selection of Tesla Pulse Current ​ The frequency indicates the repetition of the current per second. ​ High-frequency current is capable of changing polarity thousands of times per second, it basically has no polarity and in effect does not produce chemical changes. ​ This makes product penetration physically impossible. Contraindications and Best Practices for High Frequency Machines: ​ Couperose skin, Inflamed areas ​ Pacemakers ​ Metal implants, braces, body piercings ​ Heart problems, High blood pressure ​ Epilepsy ​ Clients who are pregnant ​ To avoid being burned, client should avoid contact with metal during treatments. ​ Check in with client for use alcohol-based hair products and avoid electrodes in area. ​ Electrodes should be gently removed from hand piece to avoid snapping the electrode. Spray Machine: ​ Adds moisture during or after a treatment and is used to calm and hydrate the skin. Contraindications: ​ Don’t use on clients with respiratory issues where spray may cause breathing irritation. ​ Don’t leave liquids in spray bottle for long time or overnight. May cause plastic to deteriorate. ​ Do not use the spray machine in a room that is not well ventilated. Benefits of Microcurrent: ​ Stimulates motor nerves and contractions of muscles. ​ Low level electrical current. Range from 1 to 1000 microamperes. ​ Aids in skin and muscle tone and cellular activity, blood flow and lymph circulation. ​ Once ampoule and conducting gel is applied, metal probes target facial muscle points. Microcurrent Contraindications: ​ Pacemakers ​ Epilepsy ​ Diabetes ​ Cancer ​ Pregnancy ​ Muscular diseases ​ Phlebitis or thrombosis ​ Client under the care of any healthcare provider (obtain a doctor’s note) ​ Open wounds Ultrasound Treatments: ​ Works by using ULTRASONIC ENERGY (sound waves) delivered in pulses. ​ Effectively emulsifies fat cells while leaving surrounding tissues unaffected. ​ “Cavitation” comes from the microbubbles or “cavities” created by the pressure waves. Ultrasound Treatments Contraindications: ​ Pregnancy, breastfeeding ​ HIV/AIDS ​ Cancer (all forms) ​ Lupus ​ Diabetes (uncontrolled) ​ Heart problems or diseases + High blood pressure (uncontrolled) ​ Kidney diseases, liver disease ​ Numb or insensitive to heat ​ Undergoing chemotherapy or immune therapy, immunodeficiency ​ Prednisone and other steroid medications (treatment will increase inflammation) ​ Active implanted device such as pacemaker or defibrillator Comparing Microcurrent and Ultrasonic: ​ High-intensity focused ultrasound (HIFU) doesn’t emit currents into skin but uses power of non-ionizing ultrasonic waves to heat up tissue and promote collagen production. ​ Microcurrent delivers tiny electrical charges that can be uncomfy, for sensitive users. Desincrustation (anaphoresis) for deep pore cleaning: ​ This galvanic current is liquifying sebum and debris. ​ An alkaline-based electronegative solution is applied to the skin. Solution stays on skin ​ The client holds the positive electrode and esthetician uses the negative electrode. Microdermabrasion Diamond Tip: ​ Infection control is imperative with DIAMOND TIP + equipment casing, hoses and filters. ​ Diamond tip is a stainless-steel tip. ​ Vacuum stimulates blood flow, encourages lymphatic flow, rebuilds collagen. Sprays: ​ After use, clean the spray bottle, cords, and machine with disinfectant ​ Flush with distilled water regularly. ​ Mineral buildup in the nozzle of the sprayer should be cleaned monthly or more often. Benefits of Microdermabrasion: ​ Minimizes fine lines, wrinkles, pigmentation, skin texture ​ Aids in minimizing acne scarring ​ Increases circulation ​ Promotes collagen growth ​ Assists with an overall cleansing. Microdermabrasion Contraindications: ​ Herpes lesions ( cold sores) or facial warts ​ Hyperpigmentation tendencies ​ Sunburns ​ Photosensitive ​ Fragile skin ​ Open sores or suspicious lesions ​ Eczema, Psoriasis, Lupus, Dermatitis, ​ Anti-coagulants(blood thinners) may bruise ​ Skin Cancer ​ Hepatitis A,B,C GLO Skin Beauty has a product recommendation: C-Shield Anti-Pollution Drops: ​ Vit C prevents melanin from forming in abnormal clumps, prevents hyperpigmentation. ​ Iontophoresis is unique with Vitamin C, because it’ll only lighten areas of skin that have abnormal pigmentation, without changing healthy skin cells or lightening skin tone. ​ Treatment may result in improved collagen levels, skin look healthier and more youthful Light Therapies: ​ The sun’s rays ultraviolet light (UV), but more than half of its output, is infrared. ​ Violet colored light produces the most energy and red colored light provides the least Iontophoresis: ​ The process of ionic penetration take two forms: ○​ Cataphoresis: infusion of a positive product ○​ Anaphoresis: infusion of negative product ​ Uses electric current to introduce a water-soluble product into deeper layers of the skin. ​ Current flows through conductive solutions from the positive and negative polarities. ​ Creates an exchange of negative and positive ions or charges. ​ Acidic reaction. They introduce positively charged substances Electric Lighting in Your Workspace: ​ The quality of this light can influence your work and your client’s satisfaction. ​ Fluorescent light, produced by fluorescent lamps, may be cooler than natural sunlight. ​ Incandescent light is produced by standard light bulbs and is warmer (yellow-gold). ​ Skin appears green-blue when viewed with fluorescent and golden with incandescent. Long Wavelengths Compared with Short Wavelengths: Long Wavelengths Short Wavelengths Low frequency High frequency Deeper penetration Less penetration Less energy More energy ​ Energy moves through space in waves. Each type of energy has its own wavelength, the distance between successive peaks of electromagnetic waves. ​ Waveform is measurement of distance between 2 wavelengths. Some wavelengths are long, some are short. Microcurrent energy is delivered into skin by waveform/wave pattern. ​ Human bodies can absorb light particles called protons and transform that light energy into adenosine triphosphate (ATP). provides energy to drive processes like muscle contraction ​ Protons from visible light are absorbed by photoreceptive melanin. Visible Light: ​ Electromagnetic waves we can see ​ Human eye can detect wavelengths from 380 to 700 nanometers ​ Pigments in specialized cells in the eye absorb visible radiation, triggering electrical signal that travels through the optical nerve to the brain and allows us to see in color ​ Sources of visible light are lasers, LEDs and fluorescent lamps ​ Is the part of the electromagnetic spectrum that can be seen ​ Fireflies, light bulbs, and stars all emit visible light Invisible Light: ​ Is the light at either end of the visible spectrum of light that is invisible to the naked eye. ​ Before the visible violet light of the spectrum is ultraviolet light; it is the shortest and least-penetrating light of the spectrum. Beyond the visible red light is infrared light. ​ Invisible light makes up 65 percent of natural sunlight. UV Light (known as cold light or actinic light): ​ Invisible light that has a short wavelength (giving it higher energy) ​ Is less penetrating than visible light ​ Causes chemical reactions to happen more quickly than visible light ​ Produces less heat than visible light and kills some germs ​ UV light prompts the skin to produce vitamin D ​ Overexposure to UV light can cause premature aging of the skin and skin cancer  There are Three Types of UV Light: ​ Ultraviolet A (UVA) ○​ Longest wavelength of the UV light spectrum and penetrates directly into the dermis of the skin, damaging the collagen and elastin. ○​ Often used in tanning beds ​ Ultraviolet B (UVB) ○​ Often called the burning light because it is most associated with sunburns ○​ Excessive use of both UVA and UVB light can cause skin cancer ​ Ultraviolet C (UVC) ○​ Blocked by the ozone layer ○​ If the earth loses its protective layer of ozone, life will no longer exist ○​ UVC is effective at killing bacteria, viruses, mold and other pathogens Harnessing Light Energy: Catalysts Light Therapy Substances that speed up chemical reactions. Phototherapy, application of light rays to skin for treatment of wrinkles, capillaries, or pigmentation or for hair removal. Heat as an energy source while others use light. Lasers and light therapy. Acrylic nails, monomers used are catalyst that solidify nails; Other light therapies have multiple depths, colors, and in application of gel nails, UV light is catalyst for hardening. wavelengths, and the light may be scattered. Equipment used is selected based on skin type and condition Pass this energy to the initiator and the reaction begins. Phototherapy: ​ The skin is exposed to an ultraviolet light for a set amount of time. ​ Uses a man-made source of UV light ​ Can help in skin conditions caused by an overreaction of the immune system. ​ Ex: Psoriasis, Mycosis Fungoides, Vitiligo Comparing Red Light to Infrared Light: Red Light ​ Visible light and is most effective for use on the surface of the skin. Red light occupies the “long end” of the visible spectrum with wavelengths of 630 nm-700 nm. Infrared light ​ Invisible and effective for use on surface of skin and penetration of about 1.5 inches into the body. Infrared sits next to red light on the electromagnetic spectrum at 800 nm to 1000 nm. ​ In The Treatment Room: ○​ Deepest penetration ○​ Produce most heat ○​ Lamps should be 30” from skin ○​ 5-minute exposure time  Benefits of Red and Infrared Light: Red Light Infrared Heat Builds Collagen and reduces wrinkles Possible pain relief Repair sun damage Detox. breaks up fat and toxin in cells for release form the body. Cellular repair. Stimulating. Boosting metabolism and circulation Better blood flow and lymphatic drainage Skin rejuvenation Decreased inflammation Relaxation, improved sleep, warm muscles Fading scars and stretch marks Helps with repair Decrease hair loss Stimulation Collagen formation Safety when working with electromagnetic radiation: ​ Always protect client’s eyes. Contraindications to light therapies: ​ Photosensitizing medical conditions, such as lupus ​ Anyone taking a photo-sensitizing drug ​ Any open wounds or lesions ​ Patients with retinal diseases ​ Pregnant women should consult their GP before beginning LED light therapy treatments. ​ Clients with Epilepsy should consult doctor before beginning LED light therapy treatments. ​ You must wait five days after Botox or cosmetic fillers. ​ Some Thyroid Conditions. ​ People with a history of skin cancer. ​ Consult with an eye doctor before doing bright light treatment. Light Therapy in Treatment Rooms: ​ LED (light-emitting diode) light therapy. ​ LED light therapy may treat small and superficial basal cell carcinoma, a skin cancer. ​ LASER Treatments: Hair removal, pigmentation, body treatments, skin texture.