“Melanotan II protects you from sun damage or lowers skin cancer risk.”

Misleading

This statement leaves out a limit that changes its meaning.

No trial of any kind has tested sunburn, ultraviolet damage, or skin cancer as an endpoint. The published record runs the other way: melanoma and dysplastic naevus case reports, a review counting four melanomas emerging from existing moles during or shortly after melanotan use, and an approved melanocortin-1 agonist whose label calls for twice-yearly full-body skin examination because it can darken pre-existing naevi.

What this answer is based on

No reliable study in people shows the health outcome in this statement.

Limits of this answer

All protective or preventive framing, including the comparison with sunbeds. These limits show which substance, product, people, use, place, and time the answer covers. A different product or situation can have a different answer.

Topic

What is known and not known about harm, warnings, and safety limits.