Glycereth-5 Lactate

What is Glycereth-5 Lactate?

Glycereth-5 Lactate is a synthetic ingredient produced by ethoxylating glycerin to create glycereth-5, followed by esterification with lactic acid, yielding a clear, water-soluble liquid. It belongs to the class of alkoxylated polyols and lactate esters commonly incorporated into personal care products such as lotions, creams, serums, and cleansers. In cosmetic formulations, it functions primarily as an emollient, imparting a soft, slippery texture that minimizes surface roughness. As a solvent, it dissolves other components, aiding in viscosity control and active delivery across water- and oil-based systems. Its emulsifying action forms a protective film at oil-water interfaces, promoting stable blends for consistent product performance. These properties make it valuable in both rinse-off and leave-on applications, enhancing spreadability and sensory appeal without adding greasiness.

Comedogenic Rating 0/5 Low risk of clogging pores
EWG Safety Rating 1 View on EWG →

Roles in Formulation

This ingredient serves the following purposes in cosmetic formulations:

Emollient
Softens and smooths skin by filling in surface roughness and improving slip; can also help reduce moisture loss when paired with occlusives and film formers.
Solvent
Dissolves and carries other ingredients, helping control viscosity, evaporation rate, and delivery of actives in both water- and oil-based systems.
Emulsifying agent
Enables stable mixing of oil and water phases by forming an interfacial film, helping create lotions, creams, and cleansers with consistent texture.

Benefits

Provides a smooth, silky feel by softening skin surface.

Facilitates even mixing of ingredients for stable product textures.

Assists in moisture retention when combined with other hydrators.

Who It's For

A quick guide for who this ingredient may suit (and who should be cautious).

Who May Benefit Who Should Avoid
Individuals with dry or rough skin needing lightweight softening.
Those with rare sensitivity to ethoxylated glycerin compounds.
Users of creams and lotions for improved texture and spread.
Individuals preferring strictly botanical or non-synthetic ingredients.
People seeking non-greasy formulas with balanced hydration.
People allergic to lactic acid derivatives, though uncommon.

Safety Notes

  • Deemed safe for use in cosmetics at typical concentrations.
  • Presents low concern for skin irritation or comedogenicity.

Frequently Asked Questions about Glycereth-5 Lactate

What is Glycereth-5 Lactate made from?

It is a synthetic ester of glycereth-5 (ethoxylated glycerin) and lactic acid.

Is it suitable for sensitive skin?

Yes, it shows low irritation potential in cosmetic applications.

What types of products include it?

Commonly found in moisturizers, serums, cleansers, and emulsions.