Ahacid Scalp Lotion Skin Turnover Formula with 5% glycolic acid and 5% lactic acid will gently exfoliate dry areas of the scalp. The oily solution will heal and gently eliminate the manifestations of dandruff and the effects of seborrheic dermatitis of the scalp. AHACID Lotion for the scalp is an additional treatment for cleansing the scalp at times of high fat content, and will also prolong the purity of the scalp with normalization of microflora.