Vitamin C Serum | Transdermal C Serum by Truth Treatments
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Vitamin C Serum with THDA for Visible Brightening and Firmness
Award-winning. Pharmacist-formulated. Lipid-based.
Transdermal C Serum is a clinical-grade vitamin C serum formulated with tetrahexyldecyl ascorbate (THDA), a stable, lipid-soluble form of vitamin C designed to support the appearance of firmness, clarity, and even tone.
Formulated with 100% active and functional ingredients and no water or fillers, it delivers vitamin C in a form your skin can actually use.
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The science of lipid-soluble vitamin C
Most vitamin C serums use water-soluble L-ascorbic acid. It oxidizes fast, and oxidized vitamin C loses its potency, so the serum weakens over time. Your skin's barrier is also lipid-based, so a water-based vitamin C was never built to work with it.
THDA is lipid-soluble. It holds its potency far longer, and because it's oil-based like your skin's own barrier, it works in alignment with it, without the sting of acidic forms.
No unstable actives breaking down before they reach your skin. Just purposeful formulation.
Benefits
Vitamin C supports collagen and elastin production, helping improve the appearance of firmer, smoother, and more youthful-looking skin.
This Vitamin C serum visibly brightens skin and promotes a more even-looking complexion and tone.
Vitamin C helps support the skin’s Natural Moisturizing Factors (NMF), improving hydration and barrier function.
As a powerful antioxidant, Vitamin C helps defend against environmental stressors, free radicals, and visible signs of UV-related skin damage.
Regular use of this Vitamin C serum may help reduce the appearance of dark spots, redness, hyperpigmentation, and uneven skin tone.
This Vitamin C serum helps minimize the appearance of fine lines and wrinkles, using tetrahexyldecyl ascorbate (THDA), a stabilized, lipid-soluble form of Vitamin C built for visible performance.
Notes from Ben
Vitamin C is one of the most important nutrients for supporting healthy skin, but not all forms of vitamin C behave the same once applied topically.
Many traditional serums rely on water-soluble ascorbic acid. While effective under certain conditions, these formulas can be unstable, prone to oxidation, and often difficult for the skin to tolerate.
My Transdermal C Serum was designed differently.
By using tetrahexyldecyl ascorbate (THDA), a lipid-soluble form of vitamin C, this formula works in alignment with the skin’s natural lipid structure. This supports improved stability and more effective delivery without the irritation commonly associated with acidic forms.
Equally important is what is not included.
This formula contains no water or unnecessary fillers. It is built entirely around lipid-compatible, functional ingredients designed to support how the skin naturally absorbs and utilizes nutrients.
This is the core philosophy behind Truth Treatments.
We are not trying to force results. We are supporting the skin by delivering nutrients it recognizes and knows how to use.
Founder, Truth Treatment Systems
How to use
See the full Truth Topical Protocol
Transdermal C Serum is designed to be used as part of a layered delivery system.
Step 1: Cleanse
Prepare skin with a gentle, barrier-supportive cleanser such as Mandelic Hydrating Cleanser to remove impurities while maintaining hydration and skin integrity.
Step 2: Activate
In the palm of your hand, combine:
• 2–3 drops Transdermal C Serum
• 2–3 pumps Biomimetic Mineral Mist
Mix together and apply to freshly cleansed, damp skin.
Allow to absorb fully before applying additional products.
Use morning and evening.
The Truth Promise is simple: try it for a full 30 days, and if your skin doesn't love it, we'll refund you. Use it, judge it on results, and if it's not right, one message to our Customer Care team starts your refund. No cosmetic fine print. No corporate runaround. Just truth, and a commitment to your skin.