Feb 13, · Note: do not apply egg to broken skin and avoid contact with eyes. 8. Aloe Vera. Aloe vera contains a compound called anthraquinone, which lightens skin by removing the top layer of skin cells. It also soothes and heals skin to even out tone. Method: Apply organic aloe vera gel to the skin. Leave on 20 – 30 minutes and wash with water. Oct 08, · Apply an aloe vera mask if you have scars or sun damage on your knees. Mix 1 ⁄ 2 cup ( mL) of plain yogurt with 2 tablespoons (30 mL) of freshly extracted aloe gel. Use a spatula to apply the mask to your knees, and let it sit for minutes. Oct 17, · Aloe vera gel. Many people claim aloe vera gel can lighten skin, although there isn’t sufficient scientific evidence to support this claim. Advocates of aloe vera point to a .