Tretinoin

I’m sure it’s been asked here before but I need opinions. I keep seeing Tretinoin all over my TikTok and now my interest is piqued. I don’t want to fall into a TikTok trend but I’m 30 and my skin has been lacking a lot lately. I just doesn’t look as good as it used too. I drink all my water, take all my vitamins, eat healthy and only use products from Korea but it just looks so sad looking this past year. I keep seeing girls with gorgeous skin saying they started Tret and it changed their lives. I’m thinking of trying it and I know my skin will purge and it can take awhile so I want more opinions that aren’t on TikTok. If you do like it, where are you getting it? what does your skin care routine look like? What dosage are you on? How long did you purge or when did you notice a change? I want to hear it all genuinely.