Description CYSPERA INTENSIVE™ Cysteamine Isobionic-Amid Complex™ delivers a powerful antioxidant activity to improve the appearance of persistent brown patches and dark spots, reducing melanin production, enhancing your skin’s own natural Cysteamine, and instantly lightening pigmentation to smooth out your skin tone. Directions STEP 1 Apply one pump as a thin layer on the skin. Leave on for 15 minutes (a warming sensation or mild tingling may occur and last up to 30 min). 1st application leave on for only 5 minutes for the first week , the Second week leave on for 15 minutes and thereafter.