Which ingredient in tanning lotions helps accelerate the tanning process?

Tyrosine is an amino acid that plays a significant role in the production of melanin, the pigment responsible for the color of skin and hair. In the context of tanning lotions, tyrosine helps to accelerate the tanning process by promoting melanin production when the skin is exposed to UV rays. This means that when someone uses a tanning lotion containing tyrosine, they can achieve a faster and deeper tan compared to not using such an ingredient.

In contrast, other ingredients listed, like Vitamin C, have different functions such as acting as an antioxidant rather than directly influencing the tanning process. Zinc oxide is primarily used for its sun protection properties, often found in sunscreens, while shea butter is used for moisturization and skin nourishment but does not enhance melanin production. Therefore, the inclusion of tyrosine in tanning lotions directly supports and speeds up the tanning process, making it the correct choice.