Does Retin A (tretinoin) help for skin sagging?
If I’m hearing you correctly, you are asking if Retin A and the other Vit A cousins are helpful to prevent aging. Anything that builds collagen will OVER TIME help to prevent skin aging in the form of wrinkles and loss of elasticity (sagging). So yes! It makes sense to start it early (assuming you tolerate it well) and keep using it forever. Tretinoin is STILL the gold standard in anti-aging skin care products. It won’t help with sagging due to loss of fat and bone over the years though.
You must, must, must use it with sunscreen (SPF 30 with at least 10% zinc or titanium) every single morning! Hope this helps, Dr. I