A little lower down in the section "Beta-carotene": Sunless-tanning pills often contain β-carotene. or the section "Canthaxanthin": As a tanning age

A little lower down in the section "Beta-carotene": Sunless-tanning pills often contain β-carotene. or the section "Canthaxanthin": As a tanning agent, however, much larger quantities are used. After canthaxanthin is consumed, it is deposited throughout the body, including in the layer of fat below the skin, which turns an orange-brown color.