★What is L Theanine Powder?
L-Theanine is a natural unique non-protein amino acid, mainly extracted from green tea leaves.However,due to cost factors, chemically synthesized and fermented L-theanine dominate the current market.
★What are the differences between natural theanine and synthetic & fermented theanine?
Natural tea theanine is extracted from green tea, with milder activity, better skin compatibility and higher safety, but higher cost.
Synthetic & fermented theanine has stable supply, low price and large output, suitable for mass market products.
★What is the recommended addition amount of L Theanine Powder in different cosmetic products?
The recommended addition amount varies by product type and efficacy requirements, and there is no regulatory limit. The common addition range is as follows:
- Toners, essences, and light lotions: 0.5% - 2.0% (for gentle soothing, hydrating, and skin-calming effects);
- Soothing serums, creams, and eye creams: 2.0% - 5.0% (for enhanced anti-stress, relieving skin sensitivity and redness);
- Mask products (sheet masks, cream masks): 3.0% - 6.0% (for intensive soothing and repairing fragile skin);
- Post-medical beauty repair products: 2.0% - 4.0% (for relieving post-procedure irritation and accelerating skin barrier repair)
★What is the ideal pH range for formulating products with L Theanine Powder?
The ideal pH range for Theanine to exert its soothing efficacy while ensuring skin compatibility is 4.5 - 6.5. This range is consistent with the skin’s natural pH, helps maintain the stability of Theanine, and avoids skin discomfort. Theanine has good stability in both weakly acidic and weakly alkaline environments, but if the product pH is too low (below 4.0) or too high (above 7.0), it may slightly reduce its skin absorption rate. It is recommended to adjust the pH with neutralizers (e.g., triethanolamine, arginine) during formulation if needed.
★Which cosmetic products are most suitable for adding Theanine?
- Sensitive skin care products (toners, serums, moisturizers): It relieves skin redness, itching, and irritation caused by external stimuli (e.g., UV rays, pollution, harsh ingredients), ideal for fragile and reactive skin;
- Anti-stress skin care products: It inhibits the release of stress-related factors in the skin, reduces skin fatigue, and restores skin vitality;
- Hydrating products (essences, sheet masks): It enhances the skin’s water retention capacity, improves dryness and dehydration, and maintains skin moisture balance;
- Post-medical beauty repair products (soothing gels, repair masks): It soothes post-procedure irritation, reduces redness and swelling, and promotes skin barrier repair;
- Eye care products (eye serums, eye creams): It relieves eye skin fatigue, reduces dark circles caused by stress, and soothes delicate eye skin.
★Are there any regulatory requirements for using Ferulic Acid in cosmetics globally?
- EU Cosmetics Regulation (EC) No 1223/2009: Approved as a cosmetic ingredient with no restrictions on concentration (when used topically within safe limits, 0.1% - 3.0%).
- US FDA: Classified as a GRAS ingredient for topical use; no specific concentration limits, but must comply with good manufacturing practices (GMP) and safety standards.
- APAC Markets (China, Japan, South Korea): Approved for cosmetic use, with requirements for cosmetic-grade purity (≥ 99.0%) and compliance with local ingredient lists (e.g., China’s Cosmetic Ingredient List, CICL).
★Which well-known cosmetic brands use Theanine ?
Chanel-Anti-stress soothing & anti-aging eye & facial serums
Fresh- Black tea calming repair series (rich in natural theanine)
Purito -Sensitive skin barrier repair & anti-redness formulas
Rovectin -Cica + theanine calming toner & moisturizers
★What specifications of Theanine do you have available?
Green tea extacct: 20%-98% Theanine
Synthetic Theanine 99%
Microbial Fermented Theanine 99%
