Papain enzyme in papaya fruit was proven to have exfoliating properties when applied to the skin. By removing dead skin cells papaya helps produce younger, healthier looking skin. Papaya is also used to lighten the skin, leaving a radiant, glowing complexion. Papain which works topically, seek to inhibit tyrosinase, the enzyme in our skin pigment cells (melanocites) which make melanin. Melanin is the pigment that gives skin its color. Dark skinned individuals have more melanin than light-skinned individuals.