DESCRIPTION: Cholesterol is a naturally occurring sterol and one of the three essential lipids that make up the skin’s barrier (alongside ceramides and free fatty acids). In cosmetic formulations, it plays a critical role in restoring and stabilizing the stratum corneum lipid matrix, improving barrier integrity, and enhancing the skin’s ability to retain moisture.
Its molecular structure allows it to integrate seamlessly into lamellar systems, making it a valuable component in barrier repair creams, anti-aging treatments, sensitive-skin formulations, and advanced delivery systems.
MECHANISM OF ACTIVITY
Cholesterol supports skin health through several interlinked biochemical and structural mechanisms:
- Barrier Lipid Matrix Reinforcement
Cholesterol is one of the three major lipids in the stratum corneum. When applied topically, it integrates into the intercellular lipid lamellae, helping to rebuild the ordered lamellar structure essential for barrier function.
- Lamellar Phase Stabilization
It acts as a structural modulator, improving the packing density of lipids. This enhances the skin’s resistance to transepidermal water loss (TEWL) and environmental stressors.
- Ceramide Activation Synergy
Cholesterol works synergistically with ceramides and fatty acids to optimize lipid ratios. This synergy is crucial because the skin barrier requires these lipids in a specific molar balance to function effectively.
- Improved Lipid Fluidity and Flexibility
Its sterol backbone provides controlled fluidity to lipid bilayers, preventing brittleness and promoting resilience—especially important in dry, aged, or compromised skin.
- Enhanced Delivery of Actives
By improving lamellar organization, cholesterol can enhance penetration and bioavailability of certain lipophilic actives.
FEATURES
- Improves skin barrier strength, reducing dryness and flakiness
- Boosts hydration by reducing TEWL and enhancing moisture retention
- Softens and smooths skin texture for a more refined appearance
- Reduces visible signs of irritation, redness, and sensitivity
- Enhances suppleness and elasticity, especially in mature skin
- Supports recovery of compromised or over-exfoliated skin
- Promotes a healthier, more resilient skin appearance
- Biomimetic lipid that matches skin’s natural composition
- Essential for ceramide-based barrier repair systems
- Improves lamellar structuring in emulsions and creams
- Enhances richness and cushion in sensory profiles
- Stabilizes emulsions, especially lamellar or liquid crystal systems
- Compatible with a wide range of emollients and actives
- Supports long-term moisturization in leave-on formulations
- Improves product substantivity on the skin
- Enhances viscosity and richness in formulations
- Works synergistically with ceramide complex, niacinamide, olivem 1000, montanov-68 and fatty acids.
- Cholesterol is already in Ceramide Complex but can be used alongside it for greater clinical efficacy
- It can be a but tricky to work with as it needs higher heat to melt. Follow the easy mixing instructions given below.
APPLICATIONS: Barrier repair creams and ointments, Anti-aging moisturizers, Sensitive-skin and post-procedure products, Ceramide-rich formulations, Dermatological skincare, Lip care and eye-area treatments, Premium emulsions requiring lamellar structure.
FORMULATION GUIDELINES
INCI: Choleterol
Use Rate: 0.1 – 5.0% (0.1 – 0.5% Light moisturizers, serums, lotions where cholesterol plays a supporting role. 0.5 – 1.5% Barrier-repair emulsions, sensitive-skin products and daily moisturizers. 1.5 – 3.0% Intensive repair emulsions, post-procedure products and rich balms. 3.0 – 5.0% High-performance barrier treatments with ointment textures)
Solubility: Heated oil phase of emulsion (Cholesterol melts at a very high temperature (above 150°C). To get it to blend smoothly into your formula, you need to heat it above this temperature in heat resistant oil and mix to the heated water phase at a similar temperature.
Example Easy Mixing Instructions
- Mix cholesterol with a heat‑resistant oil from your formula.
- Heat the mixture to above 150°C while stirring until the cholesterol melts (To make sure it melts completely, you need to follow the procedure below..
- Add the other oil‑phase ingredients that can handle high heat e.g., emulsifying wax and butters and mix until fully melted. Take it off the heat and then combine the oil phase with the heated water phase at a matching temperature to create your emulsion. If the water phase is higher than 150°C (matching the oil phase) during emulsification, it will combine nicely, fully melting cholesterol without leaving any grittiness. Cool to 70-80°C and add other oils that can’t withstand heat.
Note: Don’t allow the temperature to drop too low during emulsification until a stable emulsion has been achieved – otherwise, cholesterol will not be properly dissolved and will be of no benefit in your formula. Try this in a small batch to nail the system before committing to larger batches. If this is much trouble, we suggest phytosterol as an easy alternative.
Temperature Tolerance: >150°C
pH Stability: Not applicable
Appearance: Off-white beige powder
Storage: Store in a cool, dark and dry place
This is a cosmetic raw material and is meant for external use only in cosmetic formulations. As with all of our materials, it should not be taken internally. Treasure Actives is not responsible for product compatibility. We advise everyone to test ingredients for performance, compatibility, and safety prior to committing to larger quantities. Keep all products out of reach of children. For more information, please see our terms and conditions page.
