The efficacy and effects of using A-alcohol How to build tolerance to A-alcohol

Do you know the skin care method of using C in the morning and A at night? The A here refers to retinol, which can effectively smooth the skin and fade fine lines. However, some sensitive skin is not suitable for A-alcohol, but if you want to use it, you can try these methods to build tolerance.

The efficacy and effects of using A alcohol

1. Anti-wrinkle

One of the most attractive functions of retinol is undoubtedly "anti-wrinkle". As time goes by, the collagen and elastic fibers in the dermis of the skin gradually break down. When the rate of generation is slower than the rate of loss, depressions and collapses will appear on the skin surface, and wrinkles are formed in this way. Retinol can prevent collagen decomposition and stimulate dermal fibroblasts to synthesize new collagen, thereby protecting and promoting regeneration. Thereby truly improving wrinkle problems. It should be noted that using skin care products can only improve some fine lines. Very deep wrinkles and expression lines are irreversible. When it comes to skin care, prevention is always better than cure.

2. Repair

Promote keratinocyte metabolism and strengthen the barrier

This function is amazing. It can not only exfoliate the dead keratin cells, prevent the accumulation of sebum and clog the pores, and prevent acne, but also make the originally large pores look more delicate. It can also stimulate the synthesis of mucopolysaccharides, enhance the skin's moisturizing ability, and make the stratum corneum stronger. Moreover, during the process of keratin metabolism, there are some whitening effects similar to those of fruit acid.

3. Whitening

I just mentioned that retinol removes melanin through keratin metabolism to achieve a whitening effect. In fact, not only that, it can also inhibit tyrosinase, cut off the pathway of melanin formation, and whiten through multiple channels.

4. Acne treatment

Retinol can inhibit excessive oil secretion from the sebaceous glands and has certain anti-inflammatory effects. The acne-removing ointment "Adapalene Gel" commonly used in dermatology is a retinoic acid (retinoic acid) compound and belongs to the retinoic acid class. Remember to strictly protect from the sun during use! Use it at night.

How to build tolerance to A-alcohol

It is recommended to start using A alcohol at a concentration of 0.5%.

1~2 weeks, use once a week;

3~4 weeks, use twice a week;

5~6 weeks, use three times a week;

7~8 weeks, use every other day;

9-10 weeks, daily use.

Starting from the 11th week, you can change the concentration to 1%, and increase it by 0.5% every two weeks.

After 24 weeks, tolerance can basically be established. Combination skin and oily skin can basically withstand daily use, while dry skin can basically withstand every other day use.