4AM SKIN Rest Serum

4AM SKIN Rest Serum
5.9
/ 10
Moisturizing
10.0 Humectancy icon Humectancy
1.8 Occlusivity icon Occlusivity
6Anti-wrinkle icon/ 10
Anti-wrinkle
Rich
in Antioxidants
Rich Skin Soothing icon
in Skin Soothers
$$$$

Review

Results you may expect from using 4AM SKIN Rest Serum:

Based on the ingredient analysis by CreamScan, these are the key benefits you can expect from using 4AM SKIN Rest Serum:

  • Moderate moisturizing. It has a moisturizing rating of 5.9 out of 10.
  • Significant anti-wrinkle efficacy. With an anti-wrinkle rating of 6.0 out of 10, 4AM SKIN Rest Serum is effective in minimizing wrinkles.
  • Soothing: 4AM SKIN Rest Serum contains a high concentration of soothing ingredients, which may help to reduce irritation and calm the skin.
  • Antioxidant protection.

How moisturizing is it?

Quite moisturizing: 4AM SKIN Rest Serum has a moisturizing rating of 5.9 out of 10.

Is it more humectant or occlusive? Significantly more humectant. It has a low occlusivity of 1.8 out of 10 and a maximum humectancy of 10 out of 10, primarily due to the high content of Niacinamide (est. ≈5.0%), Glycerin (est. ≈4.0%) and Propanediol (est. ≈3.0%).

Please refer to the Ratings section below for details of the moisturizing rating calculation.

Anti-wrinkle efficacy

According to CreamScan analysis, 4AM SKIN Rest Serum has a high anti-wrinkle rating of 6.0 out of 10. It contains one ingredient with proven anti-wrinkle efficacy: Niacinamide (est. ≈5.0%),
 one of the most effective and well-researched anti-wrinkle ingredients.
 
Among others, 4AM SKIN Rest Serum also contains Palmitoyl Tripeptide-38, an ingredient marketed as effective in reducing wrinkles. However, the studies supporting the anti-wrinkle claims of Palmitoyl Tripeptide-38 provide insufficient evidence of its efficacy according to CreamScan Research Evaluation Standards. Therefore, this ingredient does not contribute to the anti-wrinkle rating.
 

Please refer to the Ratings section below for details of the anti-wrinkle rating calculation.

Antioxidant benefits

We estimate that 4AM SKIN Rest Serum is rich (> 3%) in antioxidants, specifically Niacinamide (est. ≈5.0%).

A key benefit of antioxidants is their ability to reduce oxidative stress caused by free radicals and therefore prevent accelerated skin aging. Studies also show that antioxidants can protect against environmental damage such as UV radiation and pollution, and help reduce inflammation and skin redness.

Skin soothing

Based on the ingredient list analysis, 4AM SKIN Rest Serum is rich (> 5%) in soothing ingredients, particularly Niacinamide (est. ≈5.0%).

When applied to the skin, compounds of soothing ingredients, such as triglycerides, phospholipids, fatty acids, phenolic compounds, and antioxidants, work together to soothe the skin through various mechanisms: reducing inflammation, promoting wound healing, repairing the skin barrier, and providing antimicrobial and antioxidant activities.

Ingredients

Est. % Ingredient Origin Functions
80
5
4
3
2
1.5
1.3
1
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
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Ratings

All humectants
13.5
5
4
3
0.3
0.3
0.3
0.3
0.3
Benchmark
10
All occlusives
3.6
2.0
1.3
0.3
Benchmark
20
Moisturizing rating
5.9
Ingredient Est. % Benchmark Raiting
Humectancy All humectants 13.5 10
10.0
5
4
3
0.3
0.3
0.3
0.3
0.3
Occlusivity All occlusives 3.6 20
1.8
2.0
1.3
0.3
Moisturizing rating
5.9
Ingredient Est. % Benchmark Humectancy
5
4
3
0.3
0.3
0.3
0.3
0.3
All humectants 13.5 10
10
All humectants
13.5
5
4
3
0.3
0.3
0.3
0.3
0.3
Benchmark
10
Ingredient Est. % Benchmark Occlusivity
2
1.3
0.3
All occlusives 3.6 20
1.8
All occlusives
3.6
2.0
1.3
0.3
Benchmark
20
Ingredient
Ingredient anti-wrinkle power
when present at, %
in this formula est. %
Rating
6 /10 4 5 6
n/a
- 0.3 -
Total
6
Niacinamide
6
Ingredient anti-wrinkle power
6 /10
when present at, %
4
in this formula, est. %
5
Palmitoyl Tripeptide-38
-
Ingredient anti-wrinkle power
n/a
when present at, %
-
in this formula, est. %
0.3
Anti-wrinkle rating
6
Ingredient Est. % Benchmark
Rich in Antioxidants
5
1.3
1
0.3
0.3
0.3
0.3
All antioxidants 8.5 3 Rich in antioxidants
All antioxidants
8.5
Niacinamide
5
Carthamus Tinctorius (Safflower) Oleosomes
1.3
Ergothioneine
1
Hydrolyzed Sodium Hyaluronate
0.3
Lepidium Sativum Sprout Extract
0.3
Rosmarinus Officinalis (Rosemary) Leaf Extract
0.3
Tocopherol
0.3
Benchmark
3
Ingredient Est. % Benchmark
Rich in Soothing
5
0.3
0.3
0.3
All soothing 5.9 5 Rich in soothing
All soothing
5.9
5
0.3
0.3
0.3
Benchmark
5

Ingredients explained

Water
Est. %80
Function
Origin
The most used ingredient in skincare. Its concentration defines the product texture: rich creams may have about 50% of water while a light jelly about 90%. Water doesn’t moisturize the skin by itself and is used in skincare as a solvent for other ingredients.
Niacinamide
Est. %5
Function
Origin

Also known as vitamin B3, this ingredient is a true superstar with confirmed moisturizing, anti-acne, hyperpigmentation, and antioxidant benefits. Two studies confirm its significant anti-wrinkle efficacy.

Glycerin
Est. %4
Function
Origin

The most popular moisturizing ingredient in the world. It is a powerful humectant – cheap yet very effective.

Propanediol
Est. %3
Function
Origin
An excellent solvent capable of mixing water with normally water-insoluble ingredients. It also functions as a humectant due to its water-loving alcohol groups. Propanediol can control the viscosity of a product by reducing its thickness.
Caprylic/Capric Triglyceride
Est. %2
Function
Origin
A natural occlusive moisturizing and emollient ingredient, it is a blend of glycerin and two fatty acids, caprylic and capric acid. It creates an oil-based protective layer on the skin, thereby preventing water loss.
Lespedeza Capitata Leaf/Stem Extract
Est. %1.5
Function
Origin
Description is coming soon
Carthamus Tinctorius (Safflower) Oleosomes
Est. %1.3
Function
Origin
Microscopic droplets of safflower oil surrounded by a membrane. Oleosomes are able to create a very stable emulsion and are better absorbed by the skin. Safflower oil offers occlusive, emollient, and antioxidant properties.
Ergothioneine
Est. %1
Function
Origin
A naturally-occurring amino acid that functions as a powerful and versatile antioxidant.
Helianthus Annuus (Sunflower) Extract
Est. %0.3
Function
Origin
An emollient extract derived from sunflower seeds that is packed with skin-benefiting ingredients such as squalene, phytosterols, phospholipids, amino acids, and antioxidant vitamin E.
Hydrolyzed Sodium Hyaluronate
Est. %0.3
Function
Origin
A very small-molecule version of regular sodium hyaluronate. It is a powerful humectant skin-identical ingredient that absorbs into the skin and offers plumping, smoothing, and anti-wrinkle effects.
Lepidium Sativum Sprout Extract
Est. %0.3
Function
Origin
A pungently fragrant extract derived from cress. It that is rich in sulfur and contains antioxidant and anti-inflammatory flavonoids, carotenoids, and organic acids.
Oryza Sativa (Rice) Bran Extract
Est. %0.3
Function
Origin
An extract from rice bran, the brown outer part of the rice kernel. It contains emollient fatty acids and antioxidants such as tocopherols (vitamin E) and γ-oryzanol.
Palmitoyl Tripeptide-38
Est. %0.3
Function
Origin

A small synthetic peptide that increases the production of collagen, fibronectin, and hyaluronic acid in the skin. It has also been shown to reduce wrinkles in combination with other anti-aging ingredients.

Pentylene Glycol
Est. %0.3
Function
Origin

A naturally or synthetically derived preservative that exhibits effective antifungal and antibacterial traits. It also acts as a booster for more traditional preservatives. Pentylene glycol can also serve as a moisturizing humectant and solvent.

Potassium Hydroxide
Est. %0.3
Function
Origin
A very alkaline ingredient, meaning that it has a high pH. Potassium hydroxide is therefore useful in bringing a low pH in a cosmetic product up to a more neutral, skin-safe level.
Rosmarinus Officinalis (Rosemary) Leaf Extract
Est. %0.3
Function
Origin
A soothing and astringent extract derived from the fragrant, spicy leaves of rosemary. It has strong antioxidant properties. Rosemary extract can reduce signs of inflammation and also acts as an emollient and antimicrobial agent.
Tocopherol
Est. %0.3
Function
Origin

Simply another name for vitamin E. Tocopherol is a fantastic ingredient and especially beneficial for dry and inflamed skin. It has occlusive moisturizing, emollient, antioxidant, and photoprotective properties.

Lecithin
Est. %0.3
Function
Origin
A humectant, emollient, and emulsifier best suited for water-in-oil emulsions. Lecithin can come from sunflowers, soy, and eggs. The downside to lecithin is that it causes an extra burden on the formula’s preservative because it is nutritious.
Acrylates/C10-30 Alkyl Acrylate Crosspolymer
Est. %0.3
Function
Origin
A synthetic ingredient that is used to thicken water and alcohol. It results in a more lightweight formula and is commonly found in gel products.
Caprylyl Glycol
Est. %0.3
Function
Origin
An emollient that improves product spreadability and offers a silky feel on the skin. It also acts as a preservative booster that improves the efficacy of other preservatives. According to the manufacturer, it is also a humectant moisturizer.
Ethylhexylglycerin
Est. %0.3
Function
Origin
A preservative booster derived from glycerin. It is commonly paired with other preservatives to improve their efficacy. Ethylhexylglycerin is also a humectant due to its chemical base of glycerin.
Hydroxypropyl Cyclodextrin
Est. %0.3
Function
Origin
A white crystalline powder that can reduce odors coming from other ingredients in a product.

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