It is the procedure that lightens your skin color by reducing the content of skin’s melanin that can be done by using mixtures, substance and physical treatment. It also includes the procedure of cosmetic agents as well as laser skin lightening. Specific zones of hyperpigmentation such as lentigo spots, moles and birthmarks may be depigmented to match to the surrounding skin. In cases of vitiligo, unaffected skin may be lightened to achieve a more uniform appearance.
Melanin is the main substance responsible for the color of the skin. Melanin is class of dark polymers generated by the body through the process of melanogenesis. Among the melanin pigmenting the skin and hair, two types can be distinguished based on its chemical composition and biological route of synthesis: the black/brown eumelanin and the red/yellow pheomelanin. The variation of skin color among individuals is mostly because of variation of the content of melanin in the skin. Skin with little or no melanin is almost white. Other factors influence skin color in a lesser degree, including the amount of blood in blood vessels (because of the color of blood), skin thickness and content of carotenoidsin skin.
By reducing melanin, the skin becomes lighter, and some products also get rid of other imperfections such as light scars. A common question associated with skin bleaching creams is whether they are permanent or not. The truth is skin bleaching creams do not get rid of the melanin permanently.
Skin whitening Ingredients
- Kojic acid.
- Azelaic acid.
- Vitamin C.
Both ablative and nonablative lasers can have a profound effect on melasma. However, the results are not always consistent, and problems have been reported (such as hypo- or hyperpigmentation). Laser treatments of this kind are more likely to result in problems for those with darker skin tones.
Another alternative to laser treatment is cryosurgery using liquid nitrogen. Controlled destruction of skin cells causes the skin to naturally regenerate itself. Excess melanin comes to the surface and peels off in a few days. This is particularly useful in sensitive areas like the genitals where laser treatment could leave a scar. Efficacy of the treatment depends on the depth of the pigment.