Retinol is a superstar ingredient that has been shown to improve skin radiance and treat symptoms associated with chronological ageing, such as wrinkles and fine lines.

Retinol is very sensitive to air and light therefore packaging a key when choosing a retinol product. Many retinol products have poor packaging and should be avoided because the retinol would most likely be (or quickly) oxidised and become ineffective.

Our Renewal Elixir is packaged in opaque double-walled and airless pump bottles to ensure products remain efficacious during their in-use lifespan.  

Ref:
Michael Babcock, Rahul C Mehta, Elizabeth T Makino - A randomized, double-blind, split-face study comparing the efficacy and tolerability of three retinol-based products vs. three tretinoin-based products in subjects with moderate to severe facial photodamage

Manpreeet Randhawa, Dianne Rossetti, James J Leyden, Jared Fantasia, Joshua Zeichner, Gabriela Oana Cula, Michael Southall, Samantha Tucker-Samaras - One-year topical stabilized retinol treatment improves photodamaged skin in a double-blind, vehicle-controlled trial

E A Duell 1, S Kang, J J Voorhees - Unoccluded retinol penetrates human skin in vivo more effectively than unoccluded retinyl palmitate or retinoic acid

Randhawa M, Rossetti D, Leyden JJ, Fantasia J, Zeichner J, Cula GO, Southall M, Tucker-Samaras S. One-year topical stabilized retinol treatment improves photodamaged skin in a double-blind, vehicle-controlled trial. J Drugs Dermatol. 2015 Mar;14(3):271-80. PMID: 25738849.

Fluhr JW, Vienne MP, Lauze C, Dupuy P, Gehring W, Gloor M. Tolerance profile of retinol, retinaldehyde and retinoic acid under maximized and long-term clinical conditions. Dermatology. 1999;199 Suppl 1:57-60. doi: 10.1159/000051381. PMID: 10473963.