19 Questions
What is the recommended lash extension diameter for clients over the age of 50 with thinner natural lashes?
0.10-0.15mm (for Classic)
What is a common characteristic of the natural eyelashes of Asians compared to those of other ethnicities?
They are thinner
For clients with stronger natural lashes, what is the recommended lash extension diameter for Classic lashes?
0.15-0.20mm
What is the general recommendation when deciding on the suitable lash extension thickness for a client?
Consult a lash technician for advice
What is the purpose of cyanide in the lash adhesive?
To thicken the adhesive
How does cyanoacrylate react to moisture?
It solidifies fast to create polymer chains
What distinguishes the ethyl variety of cyanoacrylate used in lash adhesives?
It is thicker than other lash adhesives
Which derivative of cyanoacrylate is commonly used in Super Glue?
Methyl
What happens when cyanoacrylate comes in contact with moisture?
It reacts to create polymer chains
What is the main characteristic of cyanoacrylate used in lash adhesives for topical applications?
It appears as a liquid but hardens fast in open air
What is the primary purpose of hydroquinone in eyelash adhesive?
Preventing lash adhesive from drying out quickly
What is the role of butyl cyanoacrylate in medical applications?
Producing less formaldehyde during the curing process
Which element is responsible for the natural dark color of black lash extensions?
Carbon Black
What characteristic makes ethoxyethyl cyanoacrylate suitable for sensitive clients?
Creating a weaker bond between the lash extensions and natural lashes
What is the main function of PMMA in eyelash adhesive?
Making the extension fiber stay fixed to natural lashes
Which cyanoacrylate variety guarantees smoothness and flexibility of lash extensions?
Ethoxyethyl cyanoacrylate
What is the characteristic of black-colored adhesive compared to transparent adhesive?
It makes lash extensions look more natural
What does Poly Methyl Methacrylate (PMMA) show mild stickiness towards?
Natural lashes
What is the primary difference between butyl cyanoacrylate and ethyl cyanoacrylate?
Drying time
Study Notes
Lash Extensions and Adhesives
- For clients over 50 with thinner natural lashes, use lash extension diameters between 0.07mm to 0.10mm.
- Asians tend to have straighter and thicker natural eyelashes compared to other ethnicities.
Choosing Lash Extension Thickness
- For clients with stronger natural lashes, use Classic lash extension diameters between 0.12mm to 0.15mm.
- The general recommendation is to choose a lash extension thickness that matches the client's natural lash thickness.
Cyanoacrylate in Lash Adhesives
- Cyanide is not present in lash adhesives; cyanoacrylate is the main component.
- Cyanoacrylate reacts to moisture by polymerizing and hardening.
- Ethyl cyanoacrylate is the variety used in lash adhesives and is characterized by its fast bonding and high flexibility.
- Methyl cyanoacrylate is commonly used in Super Glue.
- When cyanoacrylate comes in contact with moisture, it polymerizes and hardens.
- Cyanoacrylate used in lash adhesives for topical applications is characterized by its low viscosity and high flexibility.
Ingredients in Lash Adhesives
- Hydroquinone is added to eyelash adhesive to prevent the growth of bacteria and mold.
- Butyl cyanoacrylate is used in medical applications due to its flexibility and biocompatibility.
- The natural dark color of black lash extensions comes from the element carbon.
Specialized Adhesives
- Ethoxyethyl cyanoacrylate is suitable for sensitive clients due to its low irritation potential.
- PMMA (Poly Methyl Methacrylate) is added to eyelash adhesive to improve its flexibility and adhesion.
- Octyl cyanoacrylate guarantees smoothness and flexibility of lash extensions.
- Black-colored adhesive has a higher carbon content compared to transparent adhesive, which gives it its color.
Adhesive Properties
- Poly Methyl Methacrylate (PMMA) shows mild stickiness towards lashes.
- The primary difference between butyl cyanoacrylate and ethyl cyanoacrylate is their molecular structure, which affects their flexibility and bonding time.
Take this quiz to test your knowledge on selecting the appropriate lash extension diameter based on the client's ethnicity and age. Learn about the recommended diameters for clients with thinner natural lashes and those with stronger natural lashes.
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
