Acids: hyaluronic, azelaic, ANA and BNA

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Vitamin C: How it works on the skin
Vitamin C in cosmetics works as a pigmentation reducer and is usually well tolerated by the skin. It also has a photoaging slowing effect.

“I recommend using vitamin C, namely L-ascorbic acid, in serums or creams,” says Alexandra Pashkova, dermatologist.
Dr. Maria Evdokimova recommends using serums with a concentration of 10-20%. According to the doctor, it is better to use them in the morning - first wash your face (you can use a skin cleanser), then apply a serum with vitamin C, then cream, then sun protection (to prevent irritation and destruction of vitamin C).

Hyaluronic acid is the most popular drug in cosmetology. It is natural for humans, as it is contained in many biological fluids and tissues. Its main property is to retain moisture in tissues.

Hyaluronic acid is used in cosmetology in the form of injections - they enlarge lips, try to rejuvenate the skin with fillers containing this acid. Moreover, it is not necessarily injected into the face - with its help they achieve an improvement in the appearance of the skin of the hands, for example.

Evidence of the effectiveness of this self employed database is limited: many studies with small samples, and there are retracted works. But the scientific community is cautiously leaning towards the verdict: yes, it works. Even in face creams. And it is also safe if the technologies and techniques of use are followed.

Hyaluronic acid in the form of ointments, creams, gels and emulsions helps moisturize dry skin and reduce the depth of wrinkles. And fillers with hyaluronic acid, which are injected subcutaneously, improve the elasticity of the skin and its thickness, and help increase collagen production.

Hyaluronic acid injections are used for non-surgical correction of facial shapes, such as a hump on the nose. Gels with hyaluronate work as a healing agent for wounds of the mucous membranes and skin ulcers. But taking hyaluronate in tablets is probably useless.

Fruit acids AHA (glycolic, lactic) and BHA (salicylic) are considered effective - they are used for exfoliation and evening out skin tone, fighting acne (due to their antimicrobial properties) and post-acne.

Azelaic acid is successfully used in the treatment of skin pigmentation, rosacea and acne. Dermatologists consider it a good anti-inflammatory and antimicrobial agent, also effective in the fight against hyperpigmentation.