4 Key Steps for Dark Spots:, First and Foremost Sun Protection , The Bleaching Cream Hydroquinone , Retinoid Tretinoin or otherwise, Strong supporting cast. , Vitamin C, Kojic acid, Tranexamic acid, Can I Use Glutathione With Tretinoin 3 areas to use tretinoin other than your face from a dermatologist Can I use Niacinamide with Tretinoin? Procoal What to Pair and Avoid with Glutathione Glutathione + Tretinoin combo for uneven skintone and hyperpigmentation different lighting : r skinwhitening