Snapshot
- Overview
- A milk sugar that draws in water for a plumper, softer feel.
- Category
- Hydration, Skin Conditioning
- Type
- Humectant
Lactose
Lactose is a disaccharide sugar from milk composed of glucose and galactose. In cosmetics it works as a humectant and mild conditioning agent that attracts moisture and boosts texture and dissolution in water-based systems.
Like this ingredient?
Our take
Is Lactose a Good Ingredient?
Rated Good as a dependable humectant that supports moisture retention and formula texture, with a long record of safe use, though it's less potent than leading humectants like glycerin or hyaluronic acid, which is why it stops at Good.
What it does
Skin Benefits
Draws water into the outer skin layers for a plumper, softer feel and helps smooth rough texture. Can lessen the look of dry flakes during wear.
Where you'll find it
Uses in Skincare & Cosmetics
Used in hydrating toners, lotions, and sheet masks, and sometimes in creams to improve glide and skin feel.
Before you use it
Safety
Low irritation potential and broadly considered safe for topical use. Those with severe milk allergies may choose to patch test, although lactose itself is not a common topical allergen.
Products with Lactose
