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
    Only the best from Brianna

    Posted by Whitney on 21st Feb 2024

    Best retinal serum I've tried. I love this way better than osmosis.

  • 5
    Amazing results!

    Posted by Anna J. on 14th Feb 2024

    I needed to make an updated review to share my experience. The A2 and CBoost were the only 2 new serums I have recently brought into my routine. I had a milia on my upper cheek lurking for months. I thought I was going to have to extract it finally (I am a licensed Esthetician 18+ years). But after a week of starting the A2 imy pesky milia dramatically flattened. And after 2 weeks now there is *nothing* to extract! Milia be gone! Such an incredible potent formula with zero irritation. Highly reccomend!

  • 5
    Truology A+

    Posted by Navdeep on 12th Feb 2024

    I have been using retinal serums for last 3 years and finally found the one that my skin loves. It does everything that it claims and more. Absolutely love and recommend ?