May Island 7 Days Secret 4D Hyaluronic Serum
Works for
MoisturizingNiacinamide, Glycerin + 9 moreWorks well
“A highly-hydrating serum that contains 12,000ppm quadruple hyaluronic molecules to hydrate the skin.”
This product can help improve hydration of the skin with the two types of ingredients.
The first type is called “humectants”:
these ingredients help attract water.
When humectants are on the surface of the skin, they “pull in” the moisture from the outside environment, or from
within deeper layers of the skin. The following ingredients in this product do the job:
glycerin, hydrolyzed collagen.
This product also contains ingredients called “occlusives”. They help reduce the speed with which our skin loses moisture to the outside environment. These ingredients also help soften the upper layer of the skin, so it feels less tight and nicer to the touch. The following ingredients in this product do the job: caprylic/capric triglyceride, hydrolyzed collagen.
The following ingredients in this product are especially good for supporting the skin barrier and helping with the hydration level: niacinamide
Evens skin toneNiacinamide, Morus alba bark extractWorks well
“With a blend of adenosine and niacinamide to help promote a brighter complexion while reduce the appearance of wrinkles.”
This product can help reduce hypepigmentation and even out the skin tone because it contains the following effective ingredients: niacinamide
The following ingredient (ingredients) in this product might be helpful, but there is no evidence to confirm that it actually can help even out the skin tone: morus alba bark extract.
Keep in mind that you would need to apply any topical skincare targetted at hypigmentation consistently for a couple of months to get a result. No topical skincare product can help get rid of hyperpigmentation (including post-acne marks and age spots) instantly.
Anti-agingNiacinamide, AdenosineWorks well
“With a blend of adenosine and niacinamide to help promote a brighter complexion while reduce the appearance of wrinkles.”
This product can help reduce and prevent fine lines and wrinkles, improve skin elasticity and firmness because it contains adenosine, niacinamide.
Keep in mind that it typically takes at least 6 weeks to notice any results because the changes that are needed to improve fine lines and elasticity happen in the deeper layers of the skin. No topical anti-aging product can “erase” wrinkles or fully reverse signs of aging.
Anti-blemishSide benefit · NiacinamideWorks well
This product can help reduce breakouts and clogged pores because it contains the following ingredient: niacinamide. This ingredient is used for treating acne and can have a noticeable effect.
Can it cause trouble?
Irritancy3 strong irritants: Alcohol, Hibiscus sabdariffa flower extract + 1 more — patch-test recommendedHigh risk
ComedogenicClean of flagged comedogenic ingredientsNone flagged
User reviews
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Ingredients
Filter by role to see what each ingredient is doing.
Water~40–60%
Glycerin~4.1–6.1%
- Irritation risk
- Low
One of the best moisturizing ingredients. Naturally present in skin. It attracts water to the upper layer of the skin working as a humectant
More about GlycerinButylene glycol~3.5–5.2%
- Irritation risk
- Low
Used to create a nice product texture and help delivery of other ingredients. Might be somewhat helpful in attracting water to the upper layer of the skin
More about Butylene glycolPeg/ppg-17/6 copolymer~2.7–4.1%
- Irritation risk
- Low
Caprylic/capric triglyceride~2.1–3.2%
- Irritation risk
- Medium
A good mix of fatty acids that forms a protective layer on the skin. Improves the shelf life of products. Derived from coconut and glycerin
More about Caprylic/capric triglycerideNiacinamide~1.7–2.5%
- Irritation risk
- Low
Is proven to be effective in reducing blemishes, evening out skin tone and helping to improve lines and wrinkles. It helps the skin to repair sun damage, calm down inflammation and keep maintain good levels of moisture. The concentration of about 2% is effective for supporting the skin barrier and evening out the skin tone. Concentration of 4-6% is better for helping with acne and balancing the sebum production
More about NiacinamideAlcohol~1.4–2.1%
- Irritation risk
- High
Can be drying and contribute to skin irritation. Used in formulars to dissolve other ingredients, create a thinner product consistency or for its antibacterial properties
More about AlcoholHydrolyzed collagen~1.3–1.9%
- Irritation risk
- Low
A typically plant-derived compound that is supposed mimic human collagen. Cannot penetrate the skin barrier so is not particularly useful in skincare products beyond attracting water to the upper layer of the skin
More about Hydrolyzed collagenPeg-60 hydrogenated castor oil~1–1.5%
- Irritation risk
- Medium
Helps oil and water mix together
More about Peg-60 hydrogenated castor oilSodium hyaluronate crosspolymer~0.8–1.2%
- Irritation risk
- Medium
Attracts water into the upper layer of the skin
More about Sodium hyaluronate crosspolymerSodium hyaluronate~0.5–1.15%
- Irritation risk
- Low
One of the best moisturizing ingredients. Attracts water into the upper layer of the skin
More about Sodium hyaluronateSodium acetylated hyaluronate~0.4–0.95%
- Irritation risk
- Low
A type of hyaluronic acid that works as an excellent moisturizer by attracting water into the upper layer of the skin. Is typically feels less sticky on the skin compared to the usual hyaluronic acid
More about Sodium acetylated hyaluronateHydrolyzed sodium hyaluronate~0.35–0.85%
- Irritation risk
- Low
Attracts water into the upper layer of the skin
More about Hydrolyzed sodium hyaluronatePentylene glycol~0.35–0.85%
- Irritation risk
- Medium
Used to preserve products, dissolve other ingredients and create a nice product texture
More about Pentylene glycolEthylhexylglycerin~0.3–0.7%
Phenoxyethanol~0.3–0.75%
- Irritation risk
- Low
A preservative. It helps prevent bacterial growth in cosmetic products
More about PhenoxyethanolCarbomer~0.2–0.75%
- Irritation risk
- Low
Helps create a thicker or gel-like product texture. It is not a surfactant but can be used in gentle cleansing formulations
More about CarbomerTriethanolamine~0.2–0.75%
- Irritation risk
- Medium
Used to adjust pH of the product and can help improve the product's smell
More about TriethanolamineHydroxyethylcellulose~0.15–0.65%
- Irritation risk
- Low
Used to thicken product formulations and create gel-like textures
More about HydroxyethylcelluloseAdenosine~0.1–0.5%
- Irritation risk
- Low
Might help improve cell turnover and reduce inflammation in skin. One study shows that the ingredients might be able to help reduce dynamic wrinkles (for example, in the corners of the eyes or on the forehead)
More about AdenosineHibiscus sabdariffa flower extract~0.1–0.45%
- Irritation risk
- High
A plant extract that can be irritating. It might contain a compound anthocyanin that could be helpful in neutralizing free radicals
More about Hibiscus sabdariffa flower extractSaururus chinensis extract~0.1–0.45%
- Irritation risk
- Medium
Plant extract that might have some anti-inflammatory properties
More about Saururus chinensis extractOpuntia humifusa stem extract~0.1–0.4%
- Irritation risk
- Low
Hippophae rhamnoides fruit extract~0.1–0.35%
- Irritation risk
- Medium
A plant extract that might help neutralize free radicals in skin, but research on its effectiveness is lacking
More about Hippophae rhamnoides fruit extractMorus alba bark extract~0.1–0.35%
- Irritation risk
- High
A plant extract that might have anti-oxidant properties and help even out skin tone, but solid evidence is lacking
More about Morus alba bark extractSchisandra chinensis extract~0.05–0.2%
- Irritation risk
- Low
Coptis chinensis rhizome extract~0.05–0.15%
- Irritation risk
- Low
Parfum~0.05–0.1%
- Irritation risk
- High
An aromatic blend of unspecified and possibly irritating ingredients
More about ParfumIngredient list view
Water, Glycerin, Butylene glycol, Peg/ppg-17/6 copolymer, Caprylic/capric triglyceride, Niacinamide, Alcohol, Hydrolyzed collagen, Peg-60 hydrogenated castor oil, Sodium hyaluronate crosspolymer, Sodium hyaluronate, Sodium acetylated hyaluronate, Hydrolyzed sodium hyaluronate, Pentylene glycol, Ethylhexylglycerin, Phenoxyethanol, Carbomer, Triethanolamine, Hydroxyethylcellulose, Adenosine, Hibiscus sabdariffa flower extract, Saururus chinensis extract, Opuntia humifusa stem extract, Hippophae rhamnoides fruit extract, Morus alba bark extract, Unknown, Schisandra chinensis extract, Coptis chinensis rhizome extract, Parfum
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Worth comparing, line by line.
Match % combines shared ingredients, the first five ingredients, shared actives and hero ingredients, irritancy (lower counts in the alternative's favour), texture and body area. Only products in the same routine step are compared.
| May Island7 Days Secret 4D Hyaluronic SerumYOUR PRODUCT | MISSHATime Revolution Red Algae Revitalizing Serum | MedicubeAGE-R Collagen Booster Gel Serum | Westman AtelierSkin Activator Serum with Hyaluronic Acid + Niacinamide | |
|---|---|---|---|---|
| Match | — | 100% | 99% | 99% |
| Price | — | $16.52 | — | $146.13 |
| Shared key ingredients | — | 9 of 9 | 9 of 9 | 8 of 9 |
| Key difference | — | Ceramide Np | Ceramide Np | Ceramide Np |
| Irritancy | High | Medium | Medium | Medium |
| Drying alcohol | Contains drying alcohol | — | — | — |
| View product | Shop | Shop | Shop |
More alternatives: Eqqualberry Vitamin illuminating SerumCOSRX 5 PDRN Collagen Intense Vitalizing Serum
Product summary
"May Island - 7 Days Secret 4D Hyaluronic Serum" is effective for: Moisturizing, Anti-aging, Evens skin tone and Anti-blemish
Ingredient callouts
- A good concentration of Niacinamide (1.70% - 2.50%). Niacinamide is a well-studied multi-tasking active. It is stable, and can work well in almost any hydrating formulation. There is solid evidence that Niacinamide can help support skin barrier, regulate oil production and reduce acne and clogged pores. It also helps to fight photodamage and improve the skin tone, reducing pigmentation marks.
- Adenosine 0.10% - 0.50%. It is a compound that in involved in many biological processes inside the skin cells. According one high-quality clinical trial, topical Adenosine in low concentrations can somewhat help improve "deep wrinkles" - the wrinkles that appear with age in places where our faces are most dynamic (for example, on the forehead or in the corners of the eyes).
- Humectants (sodium acetylated hyaluronate 0.40% - 0.95%, sodium hyaluronate 0.50% - 1.15%, hydrolyzed collagen 1.30% - 1.90% and glycerin 4.10% - 6.10%). These ingredients help attract water to the upper layer of the skin and improve the skin hydration.
Price
The product retails from 19.10$ up to 29.77$ in the United States.
For a detailed price comparison: click here.
Sources cited in this review
Every concentration estimate and effectiveness label is anchored to one of these 15 studies and safety reviews.
- 1
- 2
- 3
- 4Hyaluronic acid: A key molecule in skin agingncbi.nlm.nih.gov
- 5
- 6
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