MDA is the resurfacing technique consisting of mechanical abrasion of the skin with pressurized stream of aluminum oxide (Al2O3) crystals so as to achieve superficial skin wounding. MDA causes mechanical disruption of stratum corneum, partial epithelization and stimulation of epidermal cell turnover, vasodilatation of dermal blood vessels and dermal edema and stimulation and remodeling of dermal collagen.
MDA is useful for facial rejuvenation. It improves rough texture of the skin, dyschromias, actinic damage, superficial rhytides. It is also beneficial in non- inflammatory and comedonal acne. Other indications for MDA include superficial scars (from acne, chicken pox, traumatic), hyperpigmentation, enlarged pores, clogged pores, striae, superficial to medium depth rhytides and keratosis pilaris. Microdermabrasion is also used to prime the skin for superficial chemical peels.
Microdermabrasion gives an immediate feel good factor with minimum risk of transient hyperpigmentation. It is easy to perform, less time consuming and has better patient comfort and minimal down time. MDA is safe during pregnancy and lactation.