Korikart brings, HOWDOYOUDO, first time ever a nipple tint. HOWDOYOUDO is nipple tattoo tint. A perfect product for females with dark colour nipples. It is 100% non-toxic and can be used on lips as well. The moisturizing enzymes will nourish the skin surrounding the nipples and lips. The dryness around nipples can be cured by this tint. The colour pigment is very close to the natural colour of the skin of the nipples. So it doesn't look artificial. It stays for a longer time. It's been tested dermatologically and has does not develop any allergy.