Nothing like a little science now and then.
Chess
C
C
D004890:Erythema / Q000209:etiology / Q000517:prevention & control*; D006016:Glycolates / Q000627:therapeutic use; D006801:Humans; D006873:Hydroquinones / Q000627:therapeutic use; D007641:Keratolytic Agents / Q000627:therapeutic use*; D053685:Laser Therapy; D007834:Lasers / Q000009:adverse effects*; D010859:Pigmentation Disorders / Q000209:etiology / Q000517:prevention & control*; D011837:Radiation-Protective Agents / Q000627:therapeutic use*; D016032:Randomized Controlled Trials as Topic; D013997:Time Factors; D014212:Tretinoin / Q000627:therapeutic use
D006016:Glycolates; D006873:Hydroquinones; D007641:Keratolytic Agents; D011837:Radiation-Protective Agents; C031149:glycolic acid; D014212:Tretinoin; C031927:hydroquinone