Luteolin is a flavonoid compound, widely distributed in the plant kingdom, and exists in the flowers of honeysuckle and wild chrysanthemum. In the leaves and flower buds of Lonicera japonica, the content of luteolin and its glycosides is close to 1%, which is the main medicinal ingredient. luteolin supplement can be extracted from honeysuckle.
The monohydrate of luteolin is yellow needle crystal (ethanol), insoluble in cold and hot water, easily soluble in alkaline water, methanol and ethanol. The characteristic wavelengths (absorption coefficient) of ultraviolet absorption are: 257nm (17000) and 354nm (17800). The CAS number of luteolin is 491-70-3.
CTFA regards luteolin as a cosmetic raw material, which is included in the "International Cosmetic Raw Material Standard Chinese Name Catalogue" published by the China Fragrance Association in 2010, and the "Announcement on the List of Used Cosmetic Raw Material Names" issued by the State Food and Drug Administration in 2014 It has not been listed yet, and there is no report that it is unsafe for external use.
1. Luteolin has a strong antibacterial effect, inhibiting the growth of Staphylococcus and Bacillus subtilis at a concentration of 1:350000, and also inhibiting Candida albicans and other bacteria;
2. It has a strong ability to capture oxygen-containing free radicals, and has a considerable ultraviolet absorption function, so it can inhibit and eliminate the formation of skin spots, especially senile spots due to aging, when used in skin care products;
3. Luteolin has anti-inflammatory effect and is compatible with phospholipids for the treatment of dermatitis;
4. Luteolin has a strong penetration ability on the skin, can reach deep into the skin layer, and has a firming effect;
5. Luteolin is also used as a hair restorer and moisturizer.
