"Translucent skin" refers to skin that is very thin or sheer, allowing light to pass through it. This means that the skin appears almost transparent, where you can see veins or blood vessels underneath. Full definition
No longer covered in translucent skin, your baby is gaining soft, opaque fat all over his or her body. (checkpregnancy.com)
Under white light, male and female Hypsiboas punctatus frogs have translucent skin speckled with dark dots. (sciencenews.org)
Glass Skin involves intense hydrating to achieve radiant, poreless and translucent skin which all help give a youthful glow to the skin. (beautynerdbynight.com)