Glow Monster
GLOW MONSTER takes the single-ingredient approach to Korean skincare. Instead of finished serums with long ingredient lists, this collection sells the actives on their own: low molecular weight hyaluronic acid, centella asiatica and madecasoside for calming, calendula and witch hazel extracts, and a glycerylglucoside hydration solution. You pick the ingredient your skin needs and layer it into the routine you already have. The hyaluronic acid comes in several molecular weights and bottle sizes, and the centella extract is vegan certified.
By Skinsli editorial Updated
Buying guide
GLOW MONSTER buying guide: single-ingredient Korean actives
GLOW MONSTER sells skincare ingredients one at a time. Rather than a finished serum, you get a bottle of low molecular weight hyaluronic acid, a centella asiatica extract, a witch hazel extract, or a glycerylglucoside solution, and you decide where it fits in your routine. This guide explains what each active in the collection does, how the different hyaluronic acid options compare, and how to layer single-ingredient solutions without overloading your skin.
What single-ingredient skincare means
A single-ingredient solution is exactly what it sounds like: one active in a simple base, with no fragrance or supporting cast competing for attention. The benefit is control. You can add hyaluronic acid on dry days, reach for centella when your skin is irritated, and leave out anything you do not need. GLOW MONSTER's whole collection works this way, which makes it a good fit if you like to build a routine yourself instead of buying a pre-mixed serum.
Choosing between the hyaluronic acid solutions
GLOW MONSTER offers low molecular weight hyaluronic acid in a few versions, including a 250ml bottle, a 100ml solution, and a 1% solution. Molecular weight matters: lower weight hyaluronic acid penetrates more easily, while standard weight holds water nearer the surface. If you only buy one, the low molecular weight option is the versatile pick for everyday hydration. The larger 250ml size suits anyone who uses it daily and wants to refill less often.
Centella asiatica and madecasoside for calming
Centella asiatica, often called cica, is one of the most popular calming ingredients in Korean skincare, and madecasoside is one of its key active compounds. GLOW MONSTER carries both: a Centella Asiatica Extract that is vegan certified, and an Activa Madecasoside solution. Reach for these when your skin feels reactive, sensitized, or red. They layer well under a moisturizer and pair comfortably with the hyaluronic acid.
Calendula and witch hazel extracts
The Premium Calendula Extract and Premium Witch Hazel Extract round out the soothing side of the range. Calendula is a gentle botanical traditionally used for comfort and a settled-looking complexion, while witch hazel is known for a clarifying, toning effect. Both come in 100ml bottles, so they last, and both fit into the watery essence step of a routine before heavier products.
The Activa glycerylglucoside solution
The Activa Glycerylglucoside Solution 30ml is the most concentrated hydration product in this collection. Glycerylglucoside is a humectant studied for its ability to help skin hold onto water, which makes this a good booster on days when hyaluronic acid alone is not enough. The 30ml size signals that a little goes a long way: use a few drops mixed into your usual serum or applied on damp skin.
How to layer single-ingredient solutions
The rule with single-ingredient products is to keep it simple and apply lighter, more watery solutions first. A typical order from this collection: an extract such as witch hazel or centella after cleansing, then a hyaluronic acid solution on damp skin, then your usual moisturizer to lock everything in. You do not need every product at once. Two or three that target your main concern will do more than a shelf full of bottles you rotate at random.
Vegan certification and what is in the bottle
The Centella Asiatica Extract in this collection is vegan certified, which matters if you screen your skincare for animal-derived ingredients. Across the range, the appeal is a short ingredient list you can actually read. Because each bottle is built around one named active, you always know what you are putting on your skin and can patch test it on its own before adding it to a fuller routine.
Sizes and where to start
GLOW MONSTER sizes range from a small 30ml booster up to a 250ml hyaluronic acid bottle, so you can match the size to how often you use a given active. If you are new to single-ingredient skincare, start with the low molecular weight hyaluronic acid for hydration and a centella extract for calming, since those two cover the most common needs. Add the targeted extracts and the glycerylglucoside booster later as you learn what your skin responds to.
FAQ
Frequently asked questions
FAQ
Frequently asked questions
What kind of products does GLOW MONSTER make?
GLOW MONSTER makes single-ingredient Korean skincare solutions. Instead of finished serums, the collection sells actives on their own, including low molecular weight hyaluronic acid, centella asiatica and madecasoside, calendula and witch hazel extracts, and a glycerylglucoside hydration solution. You choose the ingredient and add it to your routine.
Which GLOW MONSTER hyaluronic acid should I buy?
The low molecular weight hyaluronic acid is the most versatile choice for daily hydration, since the smaller molecule absorbs more easily. It comes in a 100ml solution, a 1% solution, and a larger 250ml bottle. Pick the 250ml if you use it every day and want to refill less often, or a 100ml to try it first.
What is the difference between the centella extract and the madecasoside solution?
Centella asiatica, or cica, is the whole-plant extract, while madecasoside is one of its key active compounds isolated on its own. Both are calming and suit reactive or red-looking skin. The Centella Asiatica Extract here is vegan certified; the Activa Madecasoside solution is a more targeted version of the same calming action.
In what order do I layer GLOW MONSTER solutions?
Apply the lighter, more watery solutions first. After cleansing, use an extract such as witch hazel or centella, then a hyaluronic acid solution on damp skin, then your moisturizer to seal everything in. You do not need to use every product at once; two or three that target your main concern are plenty.
What does the Activa glycerylglucoside solution do?
Glycerylglucoside is a humectant studied for helping skin hold onto water, so the Activa Glycerylglucoside Solution 30ml works as a hydration booster. It is concentrated, so a few drops mixed into your usual serum or applied on damp skin is enough. Use it on days when hyaluronic acid alone does not feel like enough.
How do I use the witch hazel and calendula extracts?
Both fit into the watery essence step, right after cleansing and before heavier products. Witch hazel has a clarifying, toning effect, while calendula is a gentle botanical used for comfort and a settled-looking complexion. Each comes in a 100ml bottle and can be pressed into the skin or applied on a cotton pad.
Are GLOW MONSTER products vegan?
The Centella Asiatica Extract in this collection is vegan certified. Across the range, each product is built around one named active with a short ingredient list, so you can check exactly what is in the bottle and patch test it on its own.
Why buy single ingredients instead of a finished serum?
Single-ingredient solutions give you control. You can add hyaluronic acid on dry days, use centella when skin is irritated, and leave out anything you do not need. It suits anyone who likes to build a routine rather than rely on a pre-mixed formula, and it makes it easy to tell which active is helping.