Lac
Lac refers to milk or milk-derived ingredients, often used in cosmetics for their moisturizing and soothing properties. It contains proteins, fats, and vitamins that can help nourish the skin. It is a traditional ingredient in many skincare formulations.
NoneSkin conditioning agentNot veganEvidence: Medium
BenefitModerate 1.5 / 4
Hydration i1.5 / 4
Whether the ingredient helps increase the skin’s water content — humectants that attract water, ingredients that reduce water loss, or ones that make skin feel less dry.
Soothing i1 / 4
Whether it can calm the skin — linked to less redness, irritation, discomfort, or visible reactivity.
Texture i0.5 / 4
Whether it can improve smoothness and surface texture — roughness, flaking, clogged pores, or unevenness. Exfoliating acids, retinoids, and smoothing moisturizers may score here.
RiskLow 1 / 4
Sensitization i1 / 4
Risk of allergic contact dermatitis or immune-based reactions. Fragrance allergens, preservatives, botanicals, and some dyes may score here.
Rated by SpottyLabs' ingredient methodology, independent of brands.
What it helps with
- Moisturizes skin
- Soothes irritation
- Nourishes skin
Things to watch
- Potential allergen for individuals with milk allergies
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Frequently asked questions
- What is Lac in skincare?
- Lac, or milk, in skincare refers to ingredients derived from milk, such as milk proteins or milk extracts. These are used for their moisturizing, nourishing, and soothing effects on the skin.
- Is Lac suitable for all skin types?
- While generally well-tolerated and beneficial for dry or sensitive skin, individuals with a known milk allergy should avoid products containing Lac to prevent allergic reactions.
