Skin1 product guide
If you want to spend less on a vitamin C, vitamin E and ferulic acid serum, start with the concentration you want to keep. DRMTLGY offers the same stated 15% vitamin C, 1% vitamin E and 0.5% ferulic acid trio. Timeless offers 20% vitamin C at a lower bottle price. Here is what changes with each choice.
Choose DRMTLGY to stay at 15% L-ascorbic acid while reducing the purchase price. Choose Timeless if price is the priority and you want a 20% L-ascorbic acid pump serum. The current SkinCeuticals formula adds carnosine and dandelion-derived ingredients to its C, E and ferulic combination.
USD prices checked October 24, 2026, before tax and shipping. Unit price = listed price ÷ package ounces.
| Product | US retailer | Size | Price | Price per ounce |
|---|---|---|---|---|
| SkinCeuticals C E Ferulic — current formula | Dermstore US | 1 fl oz | $185.00 | $185.00/fl oz |
| DRMTLGY Vitamin C E + F | DRMTLGY US | 1 fl oz | $55.20 sale | $55.20/fl oz |
| Timeless 20% Vitamin C + E Ferulic Acid Serum | Timeless US | 1 fl oz | $27.95 | $27.95/fl oz |
The reference choice: 15% L-ascorbic acid, 1% vitamin E and 0.5% ferulic acid, now with 0.3% carnosine and 1% Endophytol.
Consider: The highest-priced bottle here. Its current formula includes carnosine and dandelion-derived ingredients absent from the other two lists.
Use: Apply 4–5 drops after morning cleansing to face, neck and chest; follow with the rest of your skincare and sunscreen.
Keeps the stated 15% vitamin C, 1% vitamin E and 0.5% ferulic acid concentrations, with peptides and ceramides also listed.
Consider: The current price table shows a one-time sale price. Its formula uses a different base, including PEG-40 hydrogenated castor oil and PPG-26-Buteth-26.
Use: Smooth 4–5 drops over face and neck, avoiding eyes, and let it absorb before the next step. The brand's FAQ places it on dry skin in the morning; store away from direct sunlight.
The lowest listed one-time bottle price in this shortlist, with 20% L-ascorbic acid and a pump dispenser.
Consider: Moves from 15% to 20% vitamin C. Its refrigeration recommendation is worth considering when choosing a bottle for travel or a bathroom routine.
Use: Use 1–2 pumps on cleansed face and neck, morning or evening. Let it absorb before layering; use SPF in the morning. Timeless recommends refrigeration and starting the bottle when received.
Choose the two options you are weighing. Read the ingredients below or compare how the products fit your routine here.
3 of 3 details shown
No details match this filter.
Full published ingredient list
Aqua / Water / Eau, Ethoxydiglycol, Ascorbic Acid, Glycerin, Propylene Glycol, Laureth-23, Tocopherol, Phenoxyethanol, Sodium Hydroxide, Ferulic Acid, Carnosine, Panthenol, Sodium Hyaluronate, Pentylene Glycol, Taraxacum Officinale Rhizome/Root Extract - Dandelion Rhizome/Root Extract, Maltodextrin, Citric Acid, Eperua Falcata Bark Extract.
Full published ingredient list
Water/Aqua/Eau, Ascorbic Acid, Ethoxydiglycol, PEG-40 Hydrogenated Castor Oil, PPG-26-Buteth-26, Glycerin, Tocopherol, Ferulic Acid, Palmitoyl Tripeptide-1, Palmitoyl Tetrapeptide-7, Ceramide EOP, Ceramide NP, Palmitoyl Tripeptide-5, Ceramide AP, Phytosphingosine, Cholesterol, Sodium Lauroyl Lactylate, Butylene Glycol, Carbomer, Polysorbate 20, Xanthan Gum, Sodium Hyaluronate, Sodium Metabisulfite, Acetyl Octapeptide-3, Phenoxyethanol, Panthenol.
Full published ingredient list
Water, Ethoxydiglycol, L-Ascorbic Acid, Propylene Glycol, Alpha Tocopherol, Polysorbate 80, Panthenol, Ferulic Acid, Sodium Hyaluronate, Benzylalcohol, Dehydroacetic Acid.
Timeless 20% Vitamin C + E Ferulic Acid Serum — manufacturer source
For someone happy with a 15% vitamin C routine who mainly wants a lower price, DRMTLGY is the more direct concentration match. Timeless makes a different trade: a lower entry cost and a higher vitamin C concentration. Choose the strength deliberately instead of treating a larger percentage as the value score.
The table uses one-fluid-ounce bottles, so the dollar-per-ounce column is easy to compare. SkinCeuticals and DRMTLGY give directions in drops; Timeless uses pumps. Consider whether you prefer dispensing drops or taking a measured pump, and where you will keep the bottle. Timeless's refrigerator recommendation adds a practical step.
The US listing now includes carnosine and Endophytol, a dandelion-derived ingredient. If those additions are why you are considering the current bottle, keep them in your comparison. If your priority is the vitamin C, vitamin E and ferulic combination at a lower price, both alternatives provide that trio.