TRUology A² Advanced Retinal Serum .2%

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TRUology A² Advanced Retinal Serum .2% 1 fl oz | 30 ml

A² is a uniquely encapsulated and stable retinaldehyde serum that together with the most potent collagen stimulators and antioxidants, will improve sagging skin, smooth lines and wrinkles, and will increase skin elasticity.

Formulated with .2% retinaldehyde, A² uses the most potent, non inflammatory vitamin A for serious skin rejuvenation.


  • Retinaldehyde: Retinaldehyde is the star of A²: a revolutionary form of vitamin A that is proven to deliver results 11x faster than RetinOL. RetinAL is more potent, faster-acting, and does not create inflammation in the skin like the other forms of vitamin A.
    Encapsulated and stabilized for maximum potency, A² will leave you with visibly firmer, smoother, and brighter looking skin.

  • Peptides: A² is formulated with two clinically proven anti-aging peptides.
  • Palmitoyl tripeptide-5 acts on the specific skin receptors and stimulates the production of collagen in our skin cells. It firms our skin, reduces the appearance of wrinkles and fine-lines. It makes your skin look healthier and fresh.
  • Caprooyl Tripeptide-3 is known as the "anti-wrinkle peptide." Studies have shown this peptide to help diminish visible lines and wrinkles in just 28 days. Additionally, it targets the skin's elasticity and rejuvenates mature complexions. Caprooyl Tripeptide-3 comes from TGF-ß, a growth factor supporting the fibroblasts encompassing the epidermis, resulting in stronger, smoother skin.

  • Antioxidants: Antioxidants such as niacinamide, THD Ascorbate (tetrahexyldecyl ascorbate), resveratrol, vitamin E, and green tea work together to scavenge free radicals, reduce inflammation, and help skin cells repair their DNA and fend off damage caused by daily environmental aggressors.


Use once a day in the evening. First cleanse, then apply A² over face, neck, and chest. Allow to absorb and then follow with other serums and moisturizer. For new users of A², application should be phased in gradually. Start with two nights a week for the first two weeks. Then go to every other night the following week. And work your way up to nightly application.


Water, Glycerin, Pentylene Glycol, Niacinamide, Cyclodextrin, Polysorbate 20, Squalane, Coco-Caprylate/-Caprate, Cetearyl Alcohol, Cetyl Alcohol, Sodium Hyaluronate, Palmitoyl Tripeptide-5, Caprooyl Tetrapeptide-3, Hydroxyethylcellulose, Ceteareth-20, Beta Glucan, Resveratrol, Dimethyl Sulfone, Retinal, Tocopherol, Tetrahexyldecyl Ascorbate, Dextran, Dipalmitoyl Hydroxyproline, Lactic Acid, Arnica Montana Flower Extract, Glycyrrhiza Glabra (Licorice) Root Extract, Camellia Sinensis (Green Tea) Leaf Extract, Salix Nigra (Willow) Bark Extract, Epilobium Angustifolium Flower/Leaf/Stem Extract, Lonicera Japonica (Honeysuckle) Flower Extract, Lonicera Caprifolium (Honeysuckle) Flower Extract, Rubus Chamaemorus Seed Oil, Sclerotium Gum, Phenoxyethanol, Ethylhexylglycerin, Titanium Dioxide.


  • 5
    Game Changer

    Posted by Michelle Schuppe on 15th Sep 2023

    Brianna, you've outdone yourself!!! This is amazing. I've only been using this for 4 nights so far and every morning I wake up to smoother, softer skin. I can't wait to see more results with time. I've been a long time Osmosis user and more recently I tried MDAiRE. Thank you so much for sharing this amazing product with us and I can't wait for your Vitamin C serum.

  • 5
    Truology is the BEST!

    Posted by Dara on 1st Sep 2023

    the best retinal I have ever tried. This is now holy grail for me and I will continue to buy. It absorbs well compared to many retinals and the results I'm seeing after 2 weeks are so obvious, I'm shook. Love it and will use it every night for here on out!

  • 5
    Holy Grail Product!

    Posted by Jen Decker on 24th Aug 2023

    I have very sensitive, mature skin and in just a matter of three weeks I knew this was moving right up to holy grail status! I was able to use it every night from the first use and I will never be without it! Everyone needs this in their nightly routine!