사고뭉
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UVA: Penetrates the dermis to cause dryness, directly leading to tanning and aging of the skin.
UVB: Indirect tanning of the skin's epidermal layer forms melanin pigment, causing melasma and freckles.
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Comments 12
UVA: Penetrates the dermis to cause dryness, directly leading to tanning and aging of the skin.
UVB: Indirect tanning of the skin's epidermal layer forms melanin pigment, causing melasma and freckles.