TRUology C-Boost Intense Defense Serum

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TRUology C-Boost Intense Defense Serum 1 fl oz | 30 ml

Super potent vitamin C and antioxidant serum that is a true powerhouse for the skin. With 20% THD ascorbate vitamin C, a highly stable and non inflammatory vitamin C, along with 15 key antioxidants to fight visible signs of aging including lines and wrinkles, dark spots, and discoloration.  C-Boost provides full comprehensive environmental defense for your skin.


  • Brightens skin and enhances skin radiance and tone
  • Refines skin texture and reduces the appearance of lines and wrinkle's
  • Scavenges free radicals, combats oxidative stress, reduces inflammation

How to Use

Use every morning and evening after cleansing. Apply to dry face, neck and décolleté.


Water, Tetrahexyldecyl Ascorbate, Squalane, Glycerin, Propanediol, Caprylic/Capric Triglyceride, Cetearyl Alcohol, Sodium Hyaluronate, Trifluoracetyl Tripeptide-2, Astaxanthin, Bisabolol, Glutathione, Ergothioneine, Cetearyl Olivate, Sorbitan Olivate, Ceteareth-20, Dextran, Ferulic Acid, Fulvic Acid, Plankton Extract, Chlorella Vulgaris Extract, Zingiber Officinale (Ginger) Root Extract, Camellia Sinensis (Green Tea) Leaf Extract, Vitis Vinifera (Grape) Seed Extract, Curcuma Longa (Tumeric) Root Extract, Glycyrrhiza Glabra (Licorice) Root Extract, Arctostaphylos Uva-Ursi-Leaf (Bearberry) Extract, Tocopherol, Magnesium Ascorbyl Phosphate, Lecithin, Acrylates/C10-30 Alkyl Acrylate Crosspolymer, Carbomer, Phenoxyethanol, Ethylhexylglycerin, Sodium Hydroxide.

non tacky | non irritating | scent-free | stable formula


  • 5
    C Boost

    Posted by Debbie Redmond on 5th Feb 2024

    I absolutely love this product. It’s my new favorite, vitamin C. My skin has looked great, it glows, and I’m not getting any hormonal breakouts. I still like to use L-Ascorbic acid once in a while, so three times a week, I put a couple drops Drmtlgy Vit C into my C Boost and it works great together. C Boost is worth the buy. I think this would be the perfect day of serum if Brianna added niacinamide and Azelaic Acid. ???

  • 5

    Posted by Josephine on 13th Dec 2023

    I use this in the morning and the TRUology retinaldeyhade at night and the results do not disappoint. I have very sensitive skin and have not had any issues. I knew Brianna's formula was going to be amazing! :)

  • 5

    Posted by Kim Maggio on 6th Dec 2023

    Switched from Osmosis and love how it blends and doesn't leave my skin orange.