Lab Summary:

This award-winning serum captures the most gentle and effective form retinol on Earth (retinal)--estimated by dermatologists to be 20x more effective than regular retinol. This elusive ingredient is captured using Protocol's patented oxygen-free bottling technology, designed by the Protocol Lab Team in collaboration with aerospace engineers.

Most clients see improvements within 10 days.

Key Active:

0.1% retinal, the enzyme-calibrated form of retinol. (i.e., naturally-occuring retinaldehyde)

(Estimated 20x more effective than regular retinol)

30ml/1fl oz

A retinoid that's 20x more effective than regular retinol...and without the drying