This particular product truly delivers what it promises. After using one package, I already noticed a smoothing effect on fine lines throughout my face and around my eyes. My face appears more radiant and fresh, and I have also noticed a significant improvement in the reduction of acne and the smoothing of certain marks. I highly recommend it and will not be switching to another product, as I will now continue to the next phase with a higher concentration of retinaldehyde. This company offers perhaps the best and most effective form of retinaldehyde on the market. Lastly, it is important to apply it during the night and, of course, use sunscreen in the morning.

P.S.: Medik8 offers products that have retinaldehyde as their main ingredient, not retinol like the majority of other companies. Retinaldehyde is more potent (11 times more potent) than retinol, as observing the vitamin A cycle, the sequence (increasing effectiveness) is as follows: after being absorbed by the body, vitamin A is converted into retinol, then into retinaldehyde, and finally into its most potent form, retinoic acid. This means that when retinaldehyde and retinol are applied to the skin, they participate in the vitamin A cycle at their respective stages: retinol needs to be converted into retinaldehyde and then into retinoic acid, while retinaldehyde only requires one conversion into retinoic acid. It is important to note that this last step is extremely fast compared to the previous conversions, which is why retinaldehyde is able to provide us with results so quickly.

Retinaldehyde greatly contributes to cellular regeneration as it promotes exfoliation and provides antibacterial properties.