beautiful, clear, fine, flawless, good, healthy, perfect
You want clear, healthy skin.

glowing, radiant
Keep your skin radiant using creams and lotions.

creamy, smooth, soft
thick, thin
translucent
supple, young, youthful
sagging, wrinkled
hard, leathery, rough, tough
delicate, sensitive
greasy, oily
moist
dry, flaky, scaly
flaking, peeling
black, brown, dark, ebony, golden, olive, tan
alabaster (literary), fair, ivory, light, milky, pale, porcelain (literary), white
Jenny is small and slender with porcelain skin.

pallid, pasty, sallow
bronzed, tanned
sunburned
weathered
freckled
raw, tender
There was a patch of raw skin on my back where the sun had burned it.

itchy
blotchy
broken, damaged
hairless
facial
Body skin is thicker than facial skin.

bare, exposed, naked
The sheets felt nice next to his bare skin.
Wear clothing that protects all exposed skin.

loose
I picked up the kitten by the loose skin on its neck.

outer
dead
A lot of dust is made up of particles of dead skin.

break, burn, damage, irritate
protect
moisturize, nourish, soothe
This cream moisturizes dry skin.

dry, dry out
exfoliate
Clean and exfoliate your skin before applying make-up.

remove
Exfoliate to remove dead skin.

penetrate, pierce, puncture
The needle pierced my skin.

shed
This snake sheds its skin eight times a year.

age
Smoking undoubtedly ages the skin.

glisten, glow
Her skin was glistening with sweat after her run.

age
They claim that this cream makes the skin age more slowly.

hang, sag
blister, burn, peel
crawl, tingle
Just thinking about spiders makes my skin crawl.

allergy, burns, cancer, complaint (esp. BrE), condition, damage, disease, disorder (esp. AmE), infection, irritation, lesion, problems, rash
graft
specialist (esp. BrE)
care
make-up and skin-care products

cleanser, cream, lotion, products (esp. AmE)
colour/color, tone
texture
type
cells, tissue
contact
Avoid skin contact with the glue.

against the/your skin
The sheets felt rough against her skin.

beneath the/your skin
Beneath his skin, the muscles were tight with tension.

on the/your skin
blisters on the skin

through the/your skin
A network of veins showed through his skin.

under the/your skin
He discovered a lump under his skin so he went to the doctor.

skin and bone (esp. BrE), skin and bones (esp. AmE)
The dog was little more than skin and bone/bones.

animal
crocodile, goat, leopard, etc.

cure, tan

banana, onion, potato, etc.

peel off, remove