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Overview

What they are

These products are both cruelty-free and reef safe . They have a total of 5 ingredients in common

Cool Features

They both contain peptides

Suited For

They're both likely to be good for anti aging, dry skin, brightening skin, scar healing and better texture

Free From

They both do not contain any harsh alcohols, parabens or sulfates

We independently verify ingredients, and our claims are backed by peer-reviewed research. Spot a product that needs an update? Let us know.

reviv serums Ultimate Serum
reviv serums Ultimate Serum
Serum
American Brand United States
Curlsmith Full Lengths Density Elixir Scalp Serum

Ingredient Info

Click any item below to learn more and see relevant ingredients

At a glance

Click on any of the items below to learn more

Notable Ingredients

Benefits

Concerns

Notable Ingredients

Benefits

Concerns

Ingredients Side-by-side

found in both products
Ultimate Serum
Water Skin Conditioning, Solvent

Water. It's the most common cosmetic ingredient of all. You'll usually see it at the top of ingredient lists, meaning that it makes up the largest part of the product.

Cetyl Ethylhexanoate Emollient

Cetyl Ethylhexanoate comes from cetearyl alcohol and 2-ethylhexanoic acid.

Olea Europaea Fruit Unsaponifiables Antioxidant, Emollient
Antioxidant  •  Not safe for Fungal Acne

Olea Europaea Fruit Unsaponifiables is an antioxidant and isn't fungal acne safe.

Unknown Full details ->
Alpha-Arbutin Antioxidant, Bleaching, Skin Conditioning
Antioxidant  •  2 Benefits

Alpha-Arbutin is made from hydroquinone and glucose. It may be derived from the fermentation of soybeans.

Glycerin Humectant, Skin Conditioning, Skin Protecting
0 / 0
2 Benefits

Glycerin is already naturally found in your skin. It helps moisturize and protect your skin.

0 Com. / 0 Irr.
Ethoxydiglycol Humectant, Solvent
0 / 0

Ethoxydiglycol is a synthetic solvent.

0 Com. / 0 Irr.
Butyrospermum Parkii Butter Skin Conditioning
Helps hydrate Dry Skin  •  2 Concerns

Butyrospermum Parkii Butter is a plant lipid from the fruit of the Shea Tree. It is an effective skin hydrator and emollient.

Very Disliked Full details ->
Palmitoyl Tripeptide-5 Skin Conditioning
Peptide  •  Not safe for Fungal Acne

Palmitoyl Tripeptide-5 isn't fungal acne safe and is a peptide.

Ergothioneine Antioxidant
Antioxidant

Ergothioneine is an antioxidant.

Dipalmitoyl Hydroxyproline Skin Conditioning
Not safe for Fungal Acne

Dipalmitoyl Hydroxyproline isn't fungal acne safe.

Hydrolyzed Sericin Skin Conditioning

We don't have a description for Hydrolyzed Sericin.

Unknown Full details ->
Phospholipids Skin Conditioning

Phospholipids are naturally found in our skin as they are the main component of cell membranes. Phospholipids have humectant, emollient, antioxidant properties.

Ubiquinone Antioxidant, Skin Conditioning
Antioxidant  •  Helps with Anti-Aging

Ubiquinone (Coenzyme Q10) is a molecule already found in our bodies. It is a potent antioxidant and skin-soothing ingredient.

Rubus Fruticosus Leaf Extract Masking, Skin Conditioning

Rubus Fruticosus Leaf Extract from blackberry leaves.

Unknown Full details ->
Saccharomyces Ferment Lysate Filtrate Skin Conditioning

Saccharomyces Ferment Lysate Filtrate is created from the fermentation of the yeast known as Saccharomyces.

Unknown Full details ->
Ascorbyl Tetraisopalmitate Antioxidant, Emollient, Skin Conditioning
Vitamin C  •  Antioxidant  •  4 Benefits  •  Not safe for Fungal Acne

Ascorbyl Tetraisopalmitate is a version of ascorbic acid, or pure Vitamin C.

Aminobutyric Acid

Aminobutyric Acid is an antioxidant. Antioxidants help fight free-radicals. Free-radicals are molecules that may damage your skin cells, such as pollution.

Unknown Full details ->
Phytosterols Skin Conditioning

We don't have a description for Phytosterols.

Tocopherol Antioxidant, Masking, Skin Conditioning
0-3 / 0-3
Vitamin E  •  Antioxidant  •  4 Benefits  •  May cause irritation

Tocopherol (also known as Vitamin E) is a common antioxidant used to help protect the skin from free-radicals and strengthen the skin barrier. It's also fat soluble - this means our skin is great at absorbing it.

0-3 Com. / 0-3 Irr.
Tocotrienols Skin Conditioning, UV Absorber

We don't have a description for Tocotrienols.

Squalene Emollient, Skin Conditioning
Helps hydrate Dry Skin  •  Not safe for Fungal Acne

Squalene is naturally found in plants and animals, including our skin and sebum. It is a lipid our bodies naturally produce and makes up about 10-12% of the oil on our skin. Our skin produces squalene to keep itself naturally hydrated.

Oryza Sativa Bran Cera Skin Conditioning

Oryza Sativa Bran Cera is wax from the outer layer of a rice kernel. It is a byproduct of milling rice, or the operation to produce a whole grain rice product.

Unknown Full details ->
Sodium Hyaluronate Humectant, Skin Conditioning
0 / 0
Hyaluronic Acid

Sodium Hyaluronate is hyaluronic acid's salt form. It is commonly derived from the sodium salt of hyaluronic acid.

0 Com. / 0 Irr.
Tocopheryl Acetate Antioxidant, Skin Conditioning
0 / 0
Vitamin E  •  Antioxidant  •  Helps brighten skin

Tocopheryl Acetate is AKA Vitamin E. It is an antioxidant and protects your skin from free radicals. Free radicals damage the skin by breaking down collagen.

0 Com. / 0 Irr.
Camellia Oleifera Leaf Extract Astringent, Skin Conditioning

Camellia Oleifera Leaf Extract is the extract of the leaves of Camellia Oleifera, Theaceae.

Dimethicone Emollient, Skin Conditioning, Skin Protecting
1 / 0
Silicon

Dimethicone is a silicone used for making products smooth and silky. It also has the added benefit of sealing in hydration. The amount of dimethicone found in beauty products is considered safe and non-comedogenic, meaning it won't clog pores.

1 Com. / 0 Irr.
Very Disliked Full details ->
Ethylhexyl Palmitate Emollient
2-3 / 0
3 Concerns

Ethylhexyl Palmitate is created from 2-ethylhexyl alcohol and palmitic acid. It is a fatty acid ester.

2-3 Com. / 0 Irr.
Very Disliked Full details ->
Polysorbate 20 Emulsifying
0 / 0
Not safe for Fungal Acne

Polysorbate 20 is made by combining ethoxylation of sorbitan, ethylene oxide, and lauric acid. It is a mild cleansing agent, surfactant, and emulsifier.

0 Com. / 0 Irr.
Very Disliked Full details ->
Cetearyl Alcohol Emollient, Emulsifying, Emulsion Stabilising
2 / 1
Fatty Alcohol  •  3 Concerns

Cetearyl alcohol is a mixture of two fatty alcohols: cetyl alcohol and stearyl alcohol. It is mainly used as an emulsifier. Emulsifiers help prevent the separation of oils and products. Due to its composition, it can also be used to thicken a product or help create foam.

2 Com. / 1 Irr.
Very Disliked Full details ->
Ceteareth-20 Cleansing, Emulsifying
2 / 3
May worsen Oily Skin

Ceteareth-20 is an emulsifier and cleansing agent. It is derived from cetearyl alcohol, a fatty alcohol.

2 Com. / 3 Irr.
Very Disliked Full details ->
Choleth-24 Emulsifying
0 / 0

Choleth-24 comes from the cholesterol of lanolins. It is used as an emulsifier, or to help stabilize other ingredients.

0 Com. / 0 Irr.
Unknown Full details ->
Ceteth-24 Cleansing, Emulsifying

We don't have a description for Ceteth-24.

Unknown Full details ->
Butylene Glycol Humectant, Masking, Skin Conditioning
1 / 0

Butylene Glycol (or BG) is used within cosmetic products for a few different reasons:

1 Com. / 0 Irr.
Xanthan Gum Emulsifying, Emulsion Stabilising, Gel Forming

Xanthan gum is used as a stabilizer and thickener within cosmetic products. It helps give products a sticky, thick feeling - preventing them from being too runny.

Disliked Full details ->
Acrylates/C10-30 Alkyl Acrylate Crosspolymer Emulsion Stabilising

Acrylates/C10-30 Alkyl Acrylate Crosspolymer is a synthetic polymer. It is used to thicken and improve the texture of products.

Disliked Full details ->
Disodium EDTA

Disodium EDTA plays a role in making products more stable by aiding other preservatives.

Disliked Full details ->
Caprylyl Glycol Emollient, Humectant, Skin Conditioning

Caprylyl Glycol is a humectant and emollient, meaning it attracts and preserves moisture.

Ethylhexylglycerin Skin Conditioning

Ethylhexylglycerin (we can't pronounce this either) is commonly used as a preservative and skin softener. It is derived from glyceryl.

Phenoxyethanol Preservative
Preservative

Phenoxyethanol is a preservative that has germicide, antimicrobial, and aromatic properties. Studies show that phenoxyethanol can prevent germ and microbial growth. By itself, it has a scent that is similar to that of a rose.

Very Disliked Full details ->
Potassium Sorbate Preservative
Preservative

Potassium Sorbate is a preservative used to prevent yeast and mold in products. It is commonly found in both cosmetic and food products.

Disliked Full details ->
Full Lengths Density Elixir Scalp Serum
Water Skin Conditioning, Solvent

Water. It's the most common cosmetic ingredient of all. You'll usually see it at the top of ingredient lists, meaning that it makes up the largest part of the product.

Propanediol Solvent

Propanediol helps absorb ingredients into your skin, boosting their benefits. It can act as an emollient, making your skin softer. Propanediol can help products last longer by boosting the properties of preservatives within the formulation.

Glycerin Humectant, Skin Conditioning, Skin Protecting
0 / 0
2 Benefits

Glycerin is already naturally found in your skin. It helps moisturize and protect your skin.

0 Com. / 0 Irr.
Larix Europaea Wood Extract Humectant, Skin Conditioning

Larix Europaea is a larch tree native to Europe.

Unknown Full details ->
Glycine Soja Germ Extract Emollient, Skin Conditioning

We don't have a description for Glycine Soja Germ Extract.

Unknown Full details ->
Pisum Sativum Sprout Extract Skin Conditioning

We don't have a description for Pisum Sativum Sprout Extract.

Unknown Full details ->
Scutellaria Baicalensis Root Extract Astringent, Humectant, Soothing
Good for Scar Healing

Scutellaria Baicalensis Root Extract comes from the Baikal skullcap or Chinese skullcap plant. This plant is native to Northeast Asia and can be found in China, Mongolia, Korea, and Siberia.

Camellia Sinensis Leaf Extract Antimicrobial, Antioxidant, Astringent
Antioxidant  •  5 Benefits

Camellia Sinensis Leaf Extract is derived from the leaves of the tea plant. Black tea, green tea, and oolong tea are all harvested from this plant.

Phyllanthus Emblica Fruit Extract Humectant, Skin Conditioning

We don't have a description for Phyllanthus Emblica Fruit Extract.

Unknown Full details ->
Hamamelis Virginiana Leaf Extract Skin Conditioning

Hamamelis Virginiana Leaf Extract comes from the witch hazel plant.

Disliked Full details ->
Lavandula Angustifolia Flower Extract Cleansing, Masking, Refreshing
EU Allergen

Lavandula Angustifolia Flower Extract comes from the lavender plant. Lavender extract has anti-inflammatory and antioxidant properties.

Very Disliked Full details ->
Thymus Vulgaris Leaf Extract Skin Protecting

We don't have a description for Thymus Vulgaris Leaf Extract.

Unknown Full details ->
Cedrus Atlantica Bark Extract Perfuming, Skin Conditioning
Fragrance  •  EU Allergen

Cedrus Atlantica Bark Extract is a fragrance.

Unknown Full details ->
Peg-40 Hydrogenated Castor Oil Emulsifying
Oil  •  Not safe for Fungal Acne

Peg-40 Hydrogenated Castor Oil is derived from castor oil and polyethylene glycol (PEG). It is used as a emollient and emulsifier.

Very Disliked Full details ->
Trifolium Pratense Flower Extract Astringent, Masking
Good for Minimizing Pores

Trifolium Pratense Flower Extract can help to reduce large pores.

Unknown Full details ->
Triticum Vulgare Germ Extract Skin Conditioning, Skin Protecting

This ingredient is extracted from the germ part of the wheat plant. The germ of a plant refers to the seed embryo, or part that sprouts into a new plant.

Sodium Citrate Buffering, Masking

Sodium Citrate is the sodium salts of citric acid. In skincare, it is used to alter pH levels and acts as a preservative.

Citric Acid Buffering, Masking
AHA  •  4 Benefits  •  2 Concerns

Citric Acid is an AHA derived from citrus fruits (think oranges, lemons, and limes!).

Disliked Full details ->
Butylene Glycol Humectant, Masking, Skin Conditioning
1 / 0

Butylene Glycol (or BG) is used within cosmetic products for a few different reasons:

1 Com. / 0 Irr.
Glycine Buffering, Skin Conditioning

Glycine is an amino acid that helps build proteins. It is already present in our skin as our bodies produce them naturally.

Arginine Masking, Skin Conditioning
Not safe for Fungal Acne

Arginine is an amino acid that is important for human development. Your body uses is it to produce hair keratin and skin collagen.

Ppg-26-Buteth-26 Skin Conditioning

We don't have a description for Ppg-26-Buteth-26.

Disliked Full details ->
Gluconolactone Skin Conditioning
PHA  •  2 Benefits

Gluconolactone is a PHA. PHAs are a great gentle alternative to traditional AHAs.

Dextran

We don't have a description for Dextran.

Unknown Full details ->
Apigenin Antioxidant
Antioxidant

Apigenin is an antioxidant.

Unknown Full details ->
Acetyl Tetrapeptide-3 Skin Protecting
Peptide

Acetyl Tetrapeptide-3 is a peptide.

Oleanolic Acid Skin Conditioning

We don't have a description for Oleanolic Acid.

Unknown Full details ->
Biotinoyl Tripeptide-1
Peptide

Biotinoyl Tripeptide-1 is a peptide.

Calcium Gluconate Humectant, Skin Conditioning

We don't have a description for Calcium Gluconate.

Unknown Full details ->
Sodium Benzoate Masking, Preservative
Preservative

Sodium Benzoate is a preservative. It's used in both cosmetic and food products to inhibit the growth of mold and bacteria. It is typically produced synthetically.

Disliked Full details ->
Potassium Sorbate Preservative
Preservative

Potassium Sorbate is a preservative used to prevent yeast and mold in products. It is commonly found in both cosmetic and food products.

Disliked Full details ->
Zinc Chloride Soothing

We don't have a description for Zinc Chloride.

Unknown Full details ->
Sodium Metabisulfite Antioxidant, Preservative
Antioxidant  •  Preservative

Sodium Metabisulfite is an antioxidant and is a preservative.

Lactic Acid Buffering, Humectant, Skin Conditioning
AHA  •  6 Benefits  •  3 Concerns

Lactic Acid is an AHA that is derived from fermenting lactose, a carbohydrate from milk. It removes the top layer of old and dead skin cells and helps increase cell turnover.

Phenoxyethanol Preservative
Preservative

Phenoxyethanol is a preservative that has germicide, antimicrobial, and aromatic properties. Studies show that phenoxyethanol can prevent germ and microbial growth. By itself, it has a scent that is similar to that of a rose.

Very Disliked Full details ->

Ingredients Explained

These ingredients are found in both products.

Ingredients higher up in an ingredient list are typically present in a larger amount.

Skin Conditioning, Solvent
Loved

Water. It's the most common cosmetic ingredient of all. You'll usually see it at the top of ingredient lists, meaning that it makes up the largest part of the product.

So why is it so popular? Water most often acts as a solvent - this means that it helps dissolve other ingredients into the formulation.

You'll also recognize water as that liquid we all need to stay alive. Talk about multi-purpose! If you see this, drink a glass of water. Stay hydrated!

Learn more about Water
Humectant, Skin Conditioning, Skin Protecting
Loved

Glycerin is already naturally found in your skin. It helps moisturize and protect your skin.

A study from 2016 found glycerin to be more effective as a humectant than AHAs and hyaluronic acid.

As a humectant, it helps the skin stay hydrated by pulling moisture to your skin. The low molecular weight of glycerin allows it to pull moisture into the deeper layers of your skin.

Hydrated skin improves your skin barrier; Your skin barrier helps protect against irritants and bacteria.

Glycerin has also been found to have antimicrobial and antiviral properties. Due to these properties, glycerin is often used in wound and burn treatments.

In cosmetics, glycerin is usually derived from plants such as soybean or palm. However, it can also be sourced from animals, such as tallow or animal fat.

This ingredient is organic, colorless, odorless, and non-toxic.

Glycerin is the name for this ingredient in American English. British English uses Glycerol/Glycerine.

Learn more about Glycerin
Humectant, Masking, Skin Conditioning
Mixed

Butylene Glycol (or BG) is used within cosmetic products for a few different reasons:

  • It is a solvent, meaning that it helps to dissolve other ingredients. This also enhances the absorption of the product into one's skin.
  • It is a humectant, which means that it helps attract moisture into the skin.
  • It helps improve product application.

Overall, Butylene Glycol is a safe and well-rounded ingredient. It is unlikely to irritate skin, and works well with pretty much all other ingredients.

Preservative
Very Disliked

Phenoxyethanol is a preservative that has germicide, antimicrobial, and aromatic properties. Studies show that phenoxyethanol can prevent germ and microbial growth. By itself, it has a scent that is similar to that of a rose.

It's often used in formulations along with Caprylyl Glycol to preserve the shelf life of products.

Preservative
Disliked

Potassium Sorbate is a preservative used to prevent yeast and mold in products. It is commonly found in both cosmetic and food products.

Potassium sorbate is potassium salt derived from sorbic acid. Sorbic acid is a natural antibiotic and effective against fungus.

Potassium sorbate and sorbic acid can be found in baked goods, cheeses, dried meats, dried fruit, ice cream, pickles, wine, yogurt, and more.

Potassium sorbate is often used with stronger preservatives.

Learn more about Potassium Sorbate

Ingredient Ratings

Here's what our community thinks of the ingredients in these two products.

Ultimate Serum
16
5
11
8
liked
mixed
disliked
not rated
Full Lengths Density Elixir Scalp Serum
11
4
8
12
liked
mixed
disliked
not rated

When to use

4 Routines
25% use in am
75% use in pm
100% use every day
1 Routine
100% use in am
0% use in pm
100% use every day