Integumentary
Dermatologis means pertaining to dermatology, treatment of the skin.
"Cutaneous" is the medical term that means pertaining to the surface of the skin.
Dermatology
Dermal
Subcutaneous
Epidermal means pertaining to upon the surface of the skin.
Dermal
The word is "dermatology" from the root derm or derma, meaning skin. Dermatology is the branch of medicine that is concerned with the physiology and pathology of the skin.
The term "pertaining to under the skin" typically refers to structures or processes that are located beneath the skin layer. This could include tissues, organs, blood vessels, nerves, or other anatomical components that are situated below the surface of the skin.
The medical term for any swelling is called a lump
Hypodermic means under the skin. Hypo means under, dermis (dermic) means skin. Like a hypodermic needle is inserted under the skin.
You can find information pertaining to wrinkle creams from certified dermatologists. Dermatologists work with skin all the time and have seen the effects of many products first hand.