L-Carnosine is a naturally occurring dipeptide composed of beta-alanine and L-histidine, valued in modern skincare formulations for its antioxidant and skin-conditioning properties. It is particularly interesting for mature, stressed and environmentally exposed skin, where formulators are looking to support a smoother, healthier-looking complexion. L-Carnosine is water-soluble, making it convenient to incorporate into water-based serums, toners, essences, creams, lotions and other aqueous formulations.
Key Skincare Benefits
Anti-aging skincare: Helps support the appearance of firmer, smoother and more youthful-looking skin.
Antioxidant support: Helps protect the formulation and skin from oxidative stress associated with environmental exposure.
Advanced anti-glycation care: Carnosine is studied for its ability to interact with reactive carbonyl compounds involved in glycation, making it a popular ingredient in anti-aging formulations.
Improves the appearance of skin texture: Suitable for formulations targeting rough or tired-looking skin.
Helps support skin elasticity: Ideal for mature-skin products designed to improve the appearance of firmness and elasticity.
Environmental stress care: Useful in formulations designed for skin exposed to pollution and other environmental stressors.
Skin-conditioning: Helps leave the skin feeling smoother and more conditioned.
L-Carnosine is particularly suitable for:
Skin Concern Suitability
Fine lines & wrinkles
Loss of firmness
Mature skin
Dull-looking skin
Environmental stress
Uneven skin texture
Dry/stressed skin
Hyperpigmentation
Recommended Usage Rate
For cosmetic formulations, a practical starting range is: 0.5–2.0%
For a stronger active-focused serum, 1–2% can be considered, provided the raw-material supplier's specification supports that concentration.
Example Formulation Levels
Finished Product Recommended L-Carnosine
Facial Toner 0.2–0.5%
Essence 0.5–1.0%
Facial Serum 0.5–2.0%
Anti-Aging Cream 0.5–1.0%
Eye Serum/Cream 0.5–1.0%
Face Mask 0.5–1.0%
Solubility & Processing: L-Carnosine is water-soluble. Pre-dissolve the required amount in a portion of the water phase before adding it to the main formulation. Avoid unnecessarily prolonged exposure to high temperatures.
For a 1 kg serum at 1% usage, use:
10 g L-Carnosine Powder + 990 g remaining ingredients.
For a 4 kg batch at 1%, use:
40 g L-Carnosine Powder.
Formulation note: The final pH and processing conditions should be selected based on the complete formula and the supplier's technical specification. Always conduct stability and compatibility testing before production.
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