Do indoor tanning lotions containing sunblock block natural UV rays?

Indoor tanning lotions that contain sunblock are designed to protect the skin from UV radiation; however, they do not block natural UV rays in the same manner that traditional sunscreen does. Indoor tanning products are formulated to enhance the tanning process and may include bronzers or other ingredients that stimulate melanin production, but they generally do not provide complete protection against UV rays in outdoor settings.

Natural UV rays, which come from the sun, can penetrate the skin and cause damage, leading to sunburn or long-term skin issues like premature aging and skin cancer. Indoor tanning lotions may offer some defense against UV light while using tanning beds, but their effectiveness in blocking natural UV rays is limited. Therefore, while they may incorporate some protective agents, the lotions do not fully block or prevent the effects of the sun’s UV radiation, making the assertion that they do not block natural UV rays accurate. Thus, this aligns with the provided answer.