Sodium Usnate
Sodium usnate is the sodium salt of usnic acid, which is derived from lichens. It is primarily used in cosmetics for its antimicrobial properties, helping to preserve products and potentially reduce odor. Its use is often limited due to potential for skin irritation.
Antimicrobial agent
BenefitMinimal 0.8 / 4
Acne i0.5 / 4
Whether it can help acne-prone skin — reducing clogged pores, excess oil, acne-causing bacteria, inflammation, or breakouts.
RiskHigh 2.5 / 4
Irritation i2.5 / 4
Risk of short-term irritation — stinging, burning, dryness, redness, or discomfort. Common for strong actives, acids, retinoids, fragrances, and harsh surfactants.
Sensitization i2 / 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
- Antimicrobial properties
- Product preservation
Things to watch
- Potential for skin irritation
- Possible sensitization
See how this matches your skin
Find out exactly what you put onto your skin. Scan any product before you buy. Free and independent — no brand is paying us. Available on Android and iOS.
Frequently asked questions
- What is sodium usnate derived from?
- Sodium usnate is derived from usnic acid, a compound naturally found in various lichen species.
- Why is sodium usnate used in cosmetics?
- It is included in cosmetic formulations primarily for its antimicrobial properties, which can help prevent the growth of microorganisms and extend product shelf life.
