I use prescribed Retinol 0.1% every 2nd or 3rd night. I often have extreme redness, itchiness and some slight swelling in patches on my face which goes away after a day or two. I am determined to soldier on until my skin becomes accustomed to Retinol. My question is, is the Retinol still effective even … Continue reading Does Retinol still work even with irritation present?