A Hydrating Serum With Just Seven Ingredients
Looking for a hydrating serum without niacinamide? How to read the label, what hydrates instead, and a 7-ingredient SKIN1004 pick for sensitive skin.
Updated October 2026
SKIN1004 Madagascar Centella Ampoule is the hydrating serum without niacinamide we recommend: its 7 ingredients hydrate with glycerin and butylene glycol, and one use showed a 142.28% immediate hydration improvement. It suits all skin types, and dry and sensitive skin get the most from it.
We're the SKIN1004 guide team, and we hear this question from two groups. One group has skin that flushes, warms or itches after niacinamide. The other already gets niacinamide from a toner or moisturizer and wants the serum step to focus on water and comfort.
Why people look for a niacinamide-free serum
Niacinamide is a form of vitamin B3, and it appears in a large share of hydrating serums, often at high strengths. Most skin tolerates it well. A smaller group feels a warm flush or itch within minutes of applying it, and that reaction is easy to confuse with dryness, so people add more product and the cycle continues.
Flushing and warmth
If your cheeks turn pink or feel hot shortly after a serum goes on, note which product you used and check its list. A pattern that repeats with niacinamide-heavy products is a good reason to try a niacinamide-free hydrating step for a couple of weeks.
Stacking across steps
Stacking is the quieter reason. When a toner, a serum and a moisturizer all contain niacinamide, the total dose climbs even though nobody planned it. Reading every step, from toner to sunscreen, shows where it comes from. On labels it appears as niacinamide and sometimes as nicotinamide.
What hydrates skin in place of niacinamide
Hydration comes from humectants, ingredients that draw water into the upper layers of skin and hold it there. Glycerin and butylene glycol are two of the most widely used, along with propanediol, panthenol and betaine. A moisturizer on top then slows that water from leaving.
That gives you a simple three-part test for a niacinamide-free hydrating serum:
- humectants such as glycerin or butylene glycol near the top of the list
- no niacinamide or nicotinamide anywhere on it
- as few other ingredients as possible, so skin has little to react to
Madagascar Centella Ampoule, ingredient by ingredient
Centella Ampoule
19.8 USD
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SKIN1004 Madagascar Centella Ampoule is USD 17.60 for 100ml, and the global store also sells 55ml and 30ml bottles. The full ingredient list is Water, Glycerin, Butylene Glycol, Centella Asiatica Extract, 1,2-Hexanediol, Cellulose Gum, Ethylhexylglycerin, and niacinamide is nowhere on it.
The table shows what each ingredient does in the formula.
| Ingredient | Position | Role in the ampoule |
|---|---|---|
| Glycerin | 2 | Humectant that draws water into skin |
| Butylene Glycol | 3 | Humectant that adds slip and moisture |
| Centella Asiatica Extract | 4 | Soothing extract from Madagascar |
| 1,2-Hexanediol and Ethylhexylglycerin | 5 and 7 | Keep the formula stable |
| Cellulose Gum | 6 | Gives the light, fluid body |
With glycerin and butylene glycol right behind water, the two humectants are high enough on the list to do the hydrating on their own. In a human application test with 22 participants with sensitive skin, one application showed a 142.28% immediate improvement in skin hydration and moisturization. The pH is 5.5-7.5, and the formula is free of fragrance and essential oils.
How it feels and layers on skin
The ampoule absorbs quickly and leaves no stickiness, so it layers under a cream or sunscreen smoothly. It also completed a non-comedogenic human application test, which matters for people dropping niacinamide because of breakouts as much as because of flushing.
Oily and combination skin get a second benefit: in a test with 22 participants, SKIN1004 Madagascar Centella Ampoule showed a 45.72% improvement in excess sebum after one use. If your skin is both oily and dehydrated and you are deciding between ingredients, Ampoule for Oily, Dehydrated Skin: Need HA or Niacinamide? compares the options side by side. For persistent redness, Facial Redness Without Breakouts: What a Serum Can Do explains what a calming serum can realistically change.
Swapping your serum one step at a time
Apply the ampoule after cleansing or toning while skin is still slightly damp. Press two or three drops over the face, then follow with moisturizer, and with sunscreen in the morning.
If you are removing niacinamide because of flushing, keep the rest of the routine unchanged and swap only the serum. Within a week or two you will know whether niacinamide was the trigger. If the toner or moisturizer also contains it, change one of those next, again one at a time, and read the list of every replacement before you buy it.
For skin that simply had too much niacinamide across three steps, keeping it in one step and using the ampoule as the hydrating layer is usually enough.
Who benefits most from a niacinamide-free hydrating step
Dry skin gets steady moisture from the two humectants and a calm base for richer creams. Sensitive skin gets a short, scent-free list that makes any reaction easy to trace. Oily skin gets a light layer that absorbs fast and helps with surface shine. Combination skin can use one serum across a dry cheek and a shiny forehead.
You can see sizes and details on our Madagascar Centella Ampoule product page, and you can bookmark this seven-ingredient serum guide to share with anyone checking labels for niacinamide.
FAQ
Can you recommend a hydrating serum without niacinamide?
SKIN1004 Madagascar Centella Ampoule is our pick. It hydrates with glycerin and butylene glycol, has 7 ingredients in total, and showed a 142.28% immediate hydration improvement after one use in a human application test.
What hydrates skin if a serum has no niacinamide?
Humectants such as glycerin and butylene glycol draw water into the upper layers of skin and hold it there. A moisturizer on top slows that water from leaving, so the routine stays hydrated.
How do I know if niacinamide is making my skin flush?
Swap only your serum for a niacinamide-free one and keep every other step the same for a week or two. If the flushing settles, niacinamide was a likely trigger, and you can check your other steps one at a time.
Is Madagascar Centella Ampoule suitable for sensitive skin?
Yes. It has a short list free of fragrance and essential oils and a pH of 5.5-7.5. Its hydration result was measured on participants with sensitive skin.