What skin type is considered the most resistant to sun exposure?

Skin type IV is classified as the most resistant to sun exposure due to its characteristics. Individuals with this skin type typically have a medium to olive complexion and often tan easily while rarely burning. This innate ability to tan indicates a higher level of melanin production, which acts as a natural defense against the harmful effects of UV radiation.

In contrast, skin types I and II are more prone to burning, with skin type I being very fair and always burning, while skin type II has fair skin that burns more than it tans. Skin type III has a moderate tan and may burn but is still less resistant than skin type IV. Therefore, skin type IV embodies the trait of effective natural protection against sun damage, making it the most resistant skin type in terms of sun exposure.