Decode Common Whitening Ingredients And Get Tips For Fairer Skin 1. Hydroquinone (HQ) HQ is the agent of choice for skin lightening. ... 2. Retinoids. Retinoids have been used topically in the treatment of acne, photoaging, and hyperpigmentation. 3. Arbutin. 4. Azelaic Acid. 5. Glycolic Acid. 6. Kojic Acid. 7. Paper Mulberry Extract. 8. Niacinamide.