[DOI] [PMC free article] [PubMed] [Google Scholar] 59.Mollica J.P., Dutka T.L., Merry T.L., Lamboley C.R., McConell G.K., McKenna M.J., Murphy R.M., Lamb G.D
Well-structured treatments lasting 6-12 months with appropriate concentrations typically maintain noticeable improvements over pre-treatment baseline including reduced fine lines (though not eliminated as during peak treatment), improved skin texture and firmness (though less dramatic than treatment peak), better overall skin quality and appearance (though aging continues at normal rates), and resolved specific issues like scarring or hyperpigmentation (which typically remain improved permanently if successfully treated)
Selenium acts as a catalyst for the production of active thyroid hormones
On the other hand, tretinoin is a powerful retinoid that promotes skin cell turnover, helping to reduce fine lines, wrinkles, and acne