Serum made in four layers
We show you layer by layer what we added and what we left out.
We thought what unstable skin needs is not a new ingredient, but putting known ingredients in their right place. From the water that touches first to what we left out until the end, we wrote down the exact order of a single drop.
Three types of hyaluronic acid in different sizes
Large molecules form a thin film on the surface, while small molecules hold moisture between the skin texture. This is where the water-light base comes from.
5% panthenol
We added this for days when your skin feels tight and hot after washing. Formulated with a non-sticky amount, it won't pill even in the morning.
Ceramide 3 : 1 : 1
Ceramide, cholesterol, and fatty acids are blended in the same ratio as the lipids that make up the skin barrier. This is the layer that sets this serum apart from other hydrating serums.
※ This is the blending ratio within the lipid complex (example). Please write the actual formulation ratio.
Three things left out
We didn't add ingredients for fragrance, color, or alcohol for a refreshing feel. So the serum is clear and has almost no scent, just the raw materials.
Fragrance-free
No artificial fragrance or essential oils
No colorants
Clear formula as is
No ethanol
No tingling sensation when applied
All 21 ingredients
Listed in order of concentration. No hidden ingredients.
| Product name | Ceramide Barrier Serum |
| Capacity | 50ml |
| Full ingredients | Please list all ingredients in order of concentration. |
| Key ingredients | Ceramide NP, panthenol 5%, 3 types of hyaluronic acid |
| Expiration | 30 months from manufacture / 12 months after opening |
| Country of origin | South Korea |
| Manufacturer / Responsible distributor | Enter seller’s business name |
| Functional cosmetics under Cosmetics Act | Not applicable |
If ingredient names are unfamiliar, please contact customer support. We will explain why each ingredient was added.
Spreads like water and finishes without stickiness
Two drops in summer, five drops in winter
Spread two to three drops thinly on humid summer mornings, and apply four to five drops generously on winter evenings dried by heating. We balanced the weight of the four layers to finish without stickiness, regardless of the amount.
* Example calculated at approx. 0.05ml per drop. Please update with the actual dropper capacity.
Application order
Apply once, wait 1 minute, then layer again
Press in two to three more drops after the first layer absorbs, and your skin will stay moisturized until morning without needing a thick layer of cream. Formulated with a water-like texture so it won't rub off on your pillow, even with two layers.
Different number of layers
| Hydrating serum | Barrier serum | |
|---|---|---|
| Layers | One layer of hyaluronic acid | Four layers |
| Key ingredients | Hyaluronic acid | Ceramide complex + panthenol |
| Fragrance · colorant | Often included | Not included |
| Full ingredients disclosed | Varies by product | All 21 |
* Survey of 120 people after 2 weeks of use (example). Please enter the actual research agency, period, and number of participants. Individual results may vary.
I bought it because all ingredients are listed. It's not sticky, so I use it in the morning too.
It really has no scent. It's my go-to on days when my skin feels hot after washing.
My skin feels less tight. I wish it came in a larger size.
Can I use them together?
We've organized five frequently asked ingredients by order and time of use.
| Ingredients to use together | Same day | Recommended order |
|---|---|---|
| Vitamin C serum | Together in the morning | Vitamin C first, then this serum after it dries |
| Retinol | Separate at night | On retinol days, use this serum only in the morning |
| AHA · BHA toner | Every other day recommended | Apply generously the evening after using exfoliants |
| Niacinamide | Safe to use together | Thinner consistency first, then this serum |
| Sunscreen | Every morning | Last step, after serum and cream |
※ This is a general guide. If your skin stings or turns red, reduce products one by one.
- Mornings when your cheeks feel tight just 3 minutes after washing
- When your skin feels sensitive the day after using an exfoliant
- When your skin feels dry all afternoon in a heated office
- Days when strongly scented skincare feels overwhelming
Designed with less
Shipped in recycled glass bottles, uncoated paper boxes, and paper cushioning.
- Check that the bottle doesn't move when shaken, then close the box.
- The label comes off cleanly when soaked in water, making the bottle easy to recycle.
- If the glass arrives broken, please send a photo on the day you receive it, and we will send a new bottle.
- Since it's a glass bottle, it's shipped secured in a paper holder. Please write the shipping time.
- In midwinter, we add an extra layer inside the box to prevent freezing.
- Exchanges and returns are accepted if the box is unopened and the dropper is unused.
- Please contact customer service first regarding any skin reactions after use.
- If you experience red spots, swelling, or itching during use, stop using it and consult a specialist.
- Do not apply to areas with wounds.
Once you've checked the four layers, start with a single drop.
One 50ml bottle, a two-month supply for morning and evening (example)
- Three types of hyaluronic acid + 5% panthenol
- Ceramide 3:1:1 ratio
- Free of fragrances, colors, and ethanol. All 21 ingredients disclosed.