Composition analysis of Kerun sunscreen cream;
1, adding cetyl -PG hydroxyethyl palmitamide (ceramide) can enhance the barrier effect of epidermal cells and improve the water retention ability of skin;
2, stearyl glycyrrhizinate, soothing and antiallergic;
3. Loarhat cypress extract can relieve skin redness caused by ultraviolet rays;
4. Add tocopherol (vitamin E) to prevent oxidation;
5. Eucalyptus globulus leaf extract to prevent skin discomfort caused by drying after sun exposure;
6. In addition to softener, there are some water-in-oil emulsifiers (to be exact, water-in-silicone oil is close to the refreshing skin feeling of oil-in-water). It can reduce the evaporation of skin moisture and has good moisturizing performance;
7, no alcohol, no spices, no pigment.
Advantages and disadvantages of chemical sunscreen
1, advantages
The advantage of chemical sunscreen is that the texture is light and not sticky, and the skin will not feel heavy after application.
2. Deficiencies
The disadvantage of chemical sun protection is poor light stability, which requires repeated coating under long-term sun exposure. Moreover, if you choose a sunscreen containing lead and mercury, long-term use will cause skin dependence and damage to skin cells and structures.
Refer to the above information? Baidu encyclopedia-chemical sun protection