A lash lift is a semi-permanent treatment that changes the curl pattern of natural lashes, eliminating the need for an eyelash curler. During the treatment, a silicone shield is placed onto the eyelids, and a lifting lotion is applied over the top of the lashes to alter their shape and mimic the curve of the shield. The procedure is based on changing the pH level of lashes with a curling lotion to open the cuticle scales and break down disulfide bonds, then restoring the pH and disulfide bonds with fixing lotion and closing the cuticles. The curling lotion is the most aggressive product of all lotions used during lash lifting and can cause the most damage if misused. The most popular version of the treatment involves both a lash lift and tint, so the hairs are also colored into a darker shade.

Ingredients used during a lash lift treatment include:

• Curling Lotion: This is the most aggressive product used during lash lifting and contains ingredients that split the disulfide bonds in the keratin to make it possible to give lashes a new shape. It can cause the most damage if misused.
• Fixing Lotion: This restores the pH and disulfide bonds with fixing lotion and closes the cuticles.
• Neutralizing Lotion: This is used to stop the action of the curling lotion and restore the pH of the lashes.
• Tint: This is a specially formulated dye used for making eyelashes darker.

Some lash lift products may also contain conditioning and moisturizing agents to keep lashes healthy and free from brittleness and breakage, such as Biotin, Hydrolyzed Soy Protein, and Panthenol.

It is important to note that lash lifts can cause irritation, dermatitis, or sensitivity, and there have been reports of long-term lash loss in rare cases. Customers must use a home care product to hydrate and nourish lashes and brows to avoid dryness and brittleness.