You sure? HGH does reduce visceral fat but has no impact on skin or collagen. Androgens also have no impact on collagen but do grow muscle so stretch the skin. I have a similar result.
If you look at me standing you would think I have good skin. No folds or wrinkles in abs. But if I actually pinch the skin, there is loose skin. You can also sort of see it if I plank. I am about 1 year out from when I met my target weight and it did actually improve on its own over that time which is exactly what everyone said. But the same people also said nothing actually tightened the skin except growing muscle, which stretched it.
Think of it another way. If roids and HGH actually impacted skin do you really think women wouldnt know by now? Come on man. The women skin care business is bigger than everything body building and weight lifting combined. It’s probably a trillion dollar segment. Have you seen what they do? Botox, red light, more creams than I can count, masks, needles, RF, etc. You really think they wouldnt have figured out that a steroid will fix it? Or HGH? They would be injecting it by the bucket load and doctors would be all over it.