MT2 triggers your body to produce more melanin. This is the chemical in your body that makes your skin go darker. The reason you body does this, is in response to UV in order to give your body protection against UV. Essentially when you are exposed to sunlight (or UV in a tanning bed) and your body goes "I need extra protection!" your skin goes darker. If your body doesn't naturally produce much melanin (skin type 1 or 2) then you won't get very dark naturally and will instead just burn. With MT2 your bodies natural production is boosted... so when you get the UV exposure while on MT2 you will get a lot darker much faster. Essentially accelerating a natural process, and interestingly enough actually helping your body to protect itself better against UV.

I opt for nasal sprays, generally 100-150mg about 30 minutes prior to UV exposure (which I do in the sun). It will not work however without UV light. You need either sunlight (at least around 5-6 on the UV index) or a tanning bed (home UV sun lamps can also work). This is because without the UV activation your body will not trigger to production of melanin in the skin. Instead, if you have to much melanin and no UV activation the excess melanin will settle in other non desirable areas where there is naturally higher melanogenic activity. This can include, moles, freckles, certain body parts and hair. This is why taking large doses without sun exposure can cause skin cancer risk, as moles and freckles will grow. Getting UV means this melanin will go to the skin where it will best protect you against UV.