Vitamin A
Role: stimulation of dermal collagen hyperplasia, promote wound healing, a thickening of the epidermis, promotes the fiber cell proliferation, inhibition of metalloproteinases, inhibit melanin to the stratum corneum. Right transfer so as to realize the pare microgroove, pigmentary abnormalities, and improve the skin effect.
Consideration:
- topical vitamin A derivatives, is usually recommended in laser resurfacing was performed before, could theoretically accelerate postoperative healing, and epidermis, reducing whiteheads, PIH probability of occurrence, and can promote the laser to penetrate the cuticle.
- the viewpoint thinks, erbium laser make collagen synthesis is reduced, this time using retinoic acid promotes collagen synthesis is more important.
- topical vitamin A derivatives have become laser resurfacing of the conventional approach, the wound healing and collagen formation promoting effect on the whole more precise, but there is still further research confirmed space.
Alternative Title Preoperative topical vitamin A derivatives of duration, generally in the months to several weeks (and most doctors choose24week, studies have suggested that in3 weeks or more).
Alternative Title exfoliative laser postoperative should discontinue topical vitamin A derivatives, until the beginning of epidermis, also with a view to be deactivated for at least 3 months ( Eli and epidermal and moisture ).