Retinaldehyde or retinal (with an A not an O) is the strongest formulation available without a prescription. Only use 1 night in 3 to reduce irritation.
This may not be the best place to start if you are retinoid naive - if so consider retinol and s...
RetinAl (with an A, not an O) is the most potent retinoid (think RetinA) over the counter. I’ve been using this formulation and had no irritation. Only use one in 3 nights to reduce irritation potential.
Prequel Retinal Renew 0.1% Retinaldehyde Gel - 1.7 fl oz
Naturium is a respected name in skin care and this retinaldehyde (aka retinal with an A) is a good addition to your routine.
Naturium - Retinaldehyde Cream Serum 0.05%
The Ordinary does single ingredient skin care well, prominently displays ingredient list and concentrations, is economical and no- fuss.
The Inkey List is a brand respected for its clearly labeled ingredient list with concentrations, no frill packaging, but is very economical.
Advanced Retinal Serum for Fine lines + Wrinkles
Here’s your Korean skincare! This is a nice retinal and the formation reduces irritation. Also contains Matrixyl, which is a proprietary blend of peptides.
celimax - The Vita-A Retinal 0.1% Shot Booster Treatment
Everyone loves Arencia! Gel formulation, also contains peptides. Tip on Olive Young - watch for sales, buy in bulk, and search for coupon codes.
Arencia Retinal Booster Shot 30ml
Another great RetinAl if you like a serum formulation