Hi, Thanks for the question. Collagen production slows down as we age. There are many modalities like the radio frequency, Lasers and chemical peels to stimulate your collagen. Among which a few sessions of radio frequency may help you more . Best of luck.
Yes, 70 year skin still produces collagen, but it produces less with age. I suggest seeing a cosmetic dermatologist to get you on a long term plan with lasers, microneedling/prp, Cosmelan, peels, Sculptra, fillers, facials and skin care. Best, Dr. Emer.