The product is very potent, not more than once in 15 days.

Yes, the product is made especially made to remove stubborn tan.

Yes, the hair turns golden. While neutralising the melanin in the top skin layer ingredients like glutathione+ kojic acid, arbutin and hydrogen peroxide they react and neutralise the melanin in the hair follicle too which is why hair turns golden. Once the tan is removed, the hair can be shaved off and the new hair will grow black only.