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.
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Ingredient Snapshot

Overview
A milk sugar that draws in water for a plumper, softer feel.
Category
Hydration, Skin Conditioning
Type
Humectant

Ingredient Ratings

Overall Rating

Good

Comedogenic Risk

None

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.

Uses In Skincare & Cosmetics

Used in hydrating toners, lotions, and sheet masks, and sometimes in creams to improve glide and skin feel.

Comedogenic Rating

This ingredient is not typically evaluated for comedogenicity, and no standardized rating is available.

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.

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.

Products with Lactose

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