Essential details
Quantity(pieces):25
MOQ:1
Lead time:ready cargo
Shipping:Express, air, land, sea
Specification Number:20859-02-3
Product Introduction
Basic Information
- Chemical Name: L-tert-Leucine or (S)-2-amino-3,3-dimethylbutanoic acid
- CAS Number: 20859 - 02 - 3
- Molecular Formula: C₆H₁₃NO₂
- Molecular Weight: 131.17
- EINECS Number: 424 - 750 - 7
Physical and Chemical Properties
Property | Value |
---|---|
Appearance | White to almost white crystalline powder |
Melting Point | ≥300 °C (lit.) |
Boiling Point | 217.7 ± 23.0 °C (predicted) |
Solubility | 125.5 g/L in water at 20°C |
Flash Point | 85.5°C |
Specific Rotation | -9 ° (C = 3, H₂O) |
Applications in Cosmetics
In cosmetics, L-tert-Leucine is mainly used for its moisturizing and skin-nourishing properties. It can penetrate the skin, help maintain skin moisture, and make the skin look more hydrated and elastic. In addition, it may also play a role in promoting skin cell metabolism, contributing to the healthy appearance of the skin. It is often found in high-end moisturizers, serums and face masks.

1. What is L-tert-Leucine (CAS 20859 - 02 - 3) and why is it used in cosmetics?
L-tert-Leucine is an amino acid. In cosmetics, it is used mainly for its excellent moisturizing and skin - nourishing properties. It can penetrate the skin easily, helping to maintain the skin's natural moisture balance. By doing so, it makes the skin look more hydrated, soft, and elastic. Additionally, it may contribute to promoting skin cell metabolism, which is beneficial for overall skin health.
L-tert-Leucine is an amino acid. In cosmetics, it is used mainly for its excellent moisturizing and skin - nourishing properties. It can penetrate the skin easily, helping to maintain the skin's natural moisture balance. By doing so, it makes the skin look more hydrated, soft, and elastic. Additionally, it may contribute to promoting skin cell metabolism, which is beneficial for overall skin health.
2. Is L-tert-Leucine safe for all skin types?
Generally, L-tert-Leucine is considered safe for most skin types. Amino acids are natural components of the skin, and L-tert-Leucine is well - tolerated by many people. However, as with any cosmetic ingredient, there is a small chance of an individual having an allergic reaction. If you notice any redness, itching, or irritation after using a product containing L-tert-Leucine, discontinue use immediately and consult a dermatologist.
Generally, L-tert-Leucine is considered safe for most skin types. Amino acids are natural components of the skin, and L-tert-Leucine is well - tolerated by many people. However, as with any cosmetic ingredient, there is a small chance of an individual having an allergic reaction. If you notice any redness, itching, or irritation after using a product containing L-tert-Leucine, discontinue use immediately and consult a dermatologist.
3. What types of cosmetics usually contain L-tert-Leucine?
It is commonly found in high - end moisturizers, serums, and face masks. These products aim to provide deep hydration and nourishment to the skin. L-tert-Leucine can enhance the effectiveness of these products by locking in moisture and promoting skin repair.
It is commonly found in high - end moisturizers, serums, and face masks. These products aim to provide deep hydration and nourishment to the skin. L-tert-Leucine can enhance the effectiveness of these products by locking in moisture and promoting skin repair.
4. How does L-tert-Leucine compare to other amino acids in cosmetics?
Each amino acid has its unique properties and functions. L-tert-Leucine stands out for its strong moisturizing ability. Some other amino acids may focus more on antioxidant effects or protein synthesis in the skin. L-tert-Leucine, with its specific molecular structure, is particularly effective at maintaining the skin's water content, which is crucial for a healthy complexion.
Each amino acid has its unique properties and functions. L-tert-Leucine stands out for its strong moisturizing ability. Some other amino acids may focus more on antioxidant effects or protein synthesis in the skin. L-tert-Leucine, with its specific molecular structure, is particularly effective at maintaining the skin's water content, which is crucial for a healthy complexion.
5. Can L-tert-Leucine help with anti - aging?
While it's not a direct anti - aging ingredient like retinol or vitamin C, L-tert-Leucine can contribute to the anti - aging process indirectly. By keeping the skin hydrated and promoting cell metabolism, it helps to maintain the skin's elasticity and firmness. Well - hydrated skin is less likely to develop fine lines and wrinkles, so in this way, it plays a supportive role in anti - aging skincare.
While it's not a direct anti - aging ingredient like retinol or vitamin C, L-tert-Leucine can contribute to the anti - aging process indirectly. By keeping the skin hydrated and promoting cell metabolism, it helps to maintain the skin's elasticity and firmness. Well - hydrated skin is less likely to develop fine lines and wrinkles, so in this way, it plays a supportive role in anti - aging skincare.