The skin of the lip, with three to five cellular layers, is very thin compared to typical face skin, having up to 16 layers. With light skin color, the lip skin contains no melanocyte (pigment cells, which give skin its color). Because of this, the blood vessels appear through the skin of the lips, which leads to their notable red coloring. With darker skin color this effect is less prominent, as in this case the skin of the lips contains more melanin and thus is visually thicker.
wikipedia.com
the problem is i hate to use lipbalm but i don't think even lipbalm with spf will not remove the melanin on my lip because i live in southeast asia where the sun is as hot as california sun
wikipedia.com
the problem is i hate to use lipbalm but i don't think even lipbalm with spf will not remove the melanin on my lip because i live in southeast asia where the sun is as hot as california sun