In dermatological treatment we often hear vitamin A acid, especially for acne patients, so people understand the vitamin A acid how much? How to use it scientifically and effectively? Here is a comprehensive introduction of tretinoin for everyone.
Vitamin A acid, Tretinoin is the most
commonly used topical medicine and oral medicine in acne treatment, is
currently the most significant effect drug used to treat acne. Externally used is
mainly for light to moderate patients, severe patients need systemic drugs.
Vitamin A acids treatment mechanism is the hair follicle keratinization
process abnormal reversal became normal, in order to reduce the formation of
acne, also indirectly reduce inflammatory acne number. In addition, vitamin A
acid can also ease pigmentation after inflammation, even can white back! For
the aging skin, vitamin A acid also has a unique efficacy, it can remove the
aging cutin and the dermis layer of collagen, to eliminate fine lines on the
face, make the skin to restore the elasticity and health.
manufacturer remain that use vitamin A acid to
treat acne, the most important is that you should be under the guidance of a
doctor (because vitamin A acids side effects are relatively large). Start with
the minimum concentrations of vitamin A acid preparation ( 0.025% cream ), and
even the 0.025% vitamin A sour cream mixture to the usually used emulsion
inside to smear on the face, wait until 2 weeks after the skin gradually adapt
to, without any side effects, can slowly increase vitamin A acid concentration
with intensity. Vitamin A acid strength from weak to strong were 0.025% cream, 0.01%gel,
0.05%cream, 0.025% gel, 0.1% cream, 0.05% solution.
When painting should avoid the attention of
the eye and around the lips and nose and cheek junction, the skin is more
fragile and sensitive, other parts can be coated uniformly on the thin layer,
can not force rub. May be we all know that vitamin A acid should use in the
evening, use before bedtime wash in the morning. However, even after washing
the face also has a small amount of vitamin A acid retention, so during use,
must remember to bring sunscreen when going out, prevent vitamin A acid bring “light
Vitamin A acids common side effect is
stimulate the skin, almost every first users will have skin redness,
irritation, burning, dryness and peeling phenomenon, if slight will never mind,
is a normal reaction, after a period of time the skin adaptation will naturally
improve. But a few people will have serious “vitamin A acid dermatitis”,
must immediately stop using the drug, and go to see department of dermatology doctors
as soon as possible. In fact, vitamin A acid also can treat ringworm and other
skin diseases, is a high quality and inexpensive good medicine.
Many people doubt the vitamin A acid
topical may cause fetal malformations, but this influence is very small.
Because the topical application of vitamin A acid most remain in the skin, the
systemic absorption dose is less than 2%; plus itself using the concentration
is very low, so it is very little systemic absorption. Generally, doctors will suggest
do contraceptive measures, preferably not pregnant during using vitamin A acid.
The market also has a lot of vitamin A acid
derivative, through improved to reduce the side effects of vitamin A acid, and
maintain the original effect, most of the constituents unchanged, is still the
vitamin A acid, mainly used as a cosmetic raw material, its mechanism and
performance basically unchanged.