Final answer:
When you tan without lotion, it increases the risk of sunburn and skin damage. Using sun-tan lotion can offer some protection by blocking UV radiation. It is important to avoid excessive sun exposure without sunblock to protect against skin damage and skin cancer.
Step-by-step explanation:
Tanning without lotion can increase the risk of sunburn and skin damage. When the skin is exposed to UV radiation from the sun or tanning lamps, it can cause damage to the outer layer of the skin. Over time, repeated sunburns and prolonged exposure to UV radiation can lead to an increased risk of skin cancer.
Using a sun-tan lotion, also known as sunblock or sunscreen, can offer some protection by blocking UV radiation. Sunblock products typically have a sun protection factor (SPF) rating that indicates the level of protection against UVB radiation.
It is important to avoid spending too much time in the sun without wearing sunblock to protect your skin and reduce the risk of skin damage and skin cancer.