Round lab Cleanser or Anua Cleanser?

I’m contemplating between the two. I’ve never tried either one but I wanted to get 1 of them to try! FYI- it’s the Round Lab Birch Juice Moisturizing Cleanser and the Anua Heartleaf Quercetinol Pore Deep Cleansing Foam. Been doing my research on the reviews from TikTok but I’d like to hear some more honest impressions from you guys that’s tried these cleansers. I have very dry skin but I have oily T zone.

Is it normal for skin to peel after using retinol?

I started using retinol from Some By Mi, both the Retinol serum and the eye serum. And my cheeks started getting all cracked and very sensitive, red to everything I put after. Is it normal or am I genuinely unable to use retinol and if so, if there anything else that I can replace retinol with?

What is the best practice for using vitamin C ?

Started using it but I started reading up some forums and it seems that Vitamin C can’t just simply be mixed and matched? And I’m confused on how to use it with other skincare products. Could you guys let me know how to move forward from this?

Best shampoo for dry scalp ?

I have flaky scalp and I’ve tried so many shampoos but nothing combats the issue.

Products that can remove my acne scarring ?

I’ve had my acne scarring for quite a long time since when I was a teenager and had cystic acne. Now my face has cleared but I still have some deep scarring. Some have lightened up after years of wearing sunscreen and trying out products but nothing has really completely made it disappear. Any good acne scarring products that really work ?