(A) The infrared light kills bacteria in the body
(B) The ultraviolet rays convert skin oil into Vitamin D
(C) Resistance power increases
(D) The pigment cells in skin produce healthy tan
(A) The infrared light kills bacteria in the body
(B) The ultraviolet rays convert skin oil into Vitamin D
(C) Resistance power increases
(D) The pigment cells in skin produce healthy tan
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