collagen has genuinely changed my skin more than any serum has

Right so I've been thinking about this for a while and I keep meaning to post it. I work in a field where stress is basically part of the job description, and a couple of years ago my hair started thinning quite noticeably — which is what sent me down the whole collagen rabbit hole in the first place. But the thing I didn't expect was what it did for my skin. I'm not doing a ten-step routine or anything like that, honestly I don't have the patience. Cleanser, SPF in the morning, something basic at night. That's about it. But since I've been consistent with collagen — properly consistent, like daily for months — my skin just looks... less tired? I don't know how else to put it. The texture around my cheeks and forehead feels different, more sort of plump I suppose. Mind you I'm 35 and living in York where it's grey approximately 300 days a year so I'll take whatever I can get lol. I'm not saying it's magic, I have no idea what's actually happening at a cellular level, but it works for me and that's enough.