Simplify the following text for a Grade 7 native English-speaking person.
Original: Attached inside the top of the follicle are sebaceous glands , which are tiny sebum-producing glands found in almost all skin except on the palms , lips and soles of the feet .
Simplified: Attached to the follicle is a sebaceous gland . This is a tiny sebum-producing gland found everywhere except on the palms , lips and soles of the feet .