I use Tret, and it’s going great, and I’ve been on it since lockdown so 3-4 years I think.
I’ve been on the same strength for ages;
Tretinoin (0.015%): a retinoid that accelerates skin cell turnover to improve skin texture
Niacinamide (4%): an antioxidant that promotes skin firmness
Azelaic Acid (4%): an antioxidant with evidence that it improves skin texture
I questioned it, and they wanted to keep it at this. Is this a strong dose? Do I leave well alone or is it like Retinol where you should build up to the highest dose?