Hair Serum
Serum
American United States
Canadian Canada

What's inside

What's inside

Key Ingredients

Benefits

Concerns

No concerns

Ingredients Side-by-side

Show highlights for:

Water

Skin Conditioning

Glycerin

Humectant
0 / 0 Helps hydrate Dry Skin IconGood for Scar Healing IconGood for Barrier Repair Icon

Sodium Metabisulfite

Antioxidant
Preservative IconAntioxidant Icon

Glycine

Buffering
Helps hydrate Dry Skin Icon

Larix Europaea Wood Extract

Humectant

Zinc Chloride

Antimicrobial

Camellia Sinensis Leaf Extract

Antimicrobial
Antioxidant IconHelps with Anti-Aging IconHelps hydrate Dry Skin IconHelps brighten skin IconHelps reduce irritation IconGood for Oily Skin IconGood for Minimizing Pores IconHelps reduce Skin Redness Icon

Redensyl

Malus Domestica Fruit Cell Culture Extract

Skin Conditioning

Astragalus Membranaceus Root Extract

Emollient
Helps reduce Skin Redness Icon

Argania Spinosa Sprout Cell Extract

Skin Conditioning

Myristoyl Pentapeptide-17

Skin Conditioning
Peptide IconNot safe for Fungal Acne Icon

Rh-Polypeptide-3

Skin Conditioning
Peptide Icon

Squalane

Emollient
1 / 0 Helps with Anti-Aging IconHelps hydrate Dry Skin IconGood for Barrier Repair Icon

Hydrogenated Lecithin

Emulsifying
Helps hydrate Dry Skin IconGood for Barrier Repair Icon

Biotinoyl Tripeptide-1

Peptide Icon

Acetyl Tetrapeptide-3

Skin Protecting
Peptide Icon

Trifolium Pratense Flower Extract

Astringent

Polygonum Multiflorum Extract

Skin Conditioning

Urtica Dioica Extract

Astringent

PEG/PPG-20/23 Dimethicone

Emulsion Stabilising
Silicon Icon

Aesculus Hippocastanum Extract

Antioxidant
Antioxidant Icon

Boswellia Serrata Resin Extract

Smoothing

Mannitol

Humectant
Helps hydrate Dry Skin Icon

Ammonium Glycyrrhizate

Masking

Caffeine

Skin Conditioning
Helps with Anti-Aging IconHelps reduce irritation Icon

Zinc Gluconate

Skin Conditioning
Zinc IconHelps fight Acne IconGood for Oily Skin IconGood for Minimizing Pores Icon

Serenoa Serrulata Fruit Extract

Skin Conditioning
Good for Oily Skin Icon

Panthenol

Skin Conditioning
0 / 0 Helps hydrate Dry Skin IconHelps reduce irritation IconHelps reduce Skin Redness IconGood for Scar Healing IconGood for Barrier Repair Icon

Vitis Vinifera Seed Extract

Antimicrobial
Antioxidant IconHelps reduce irritation IconHelps reduce Skin Redness Icon

Palmitoyl Tripeptide-1

Skin Conditioning
Peptide IconHelps with Anti-Aging IconGood for Scar Healing IconGood for Skin Texture Icon

Tripeptide-8

Skin Conditioning
Peptide Icon

Acrylates/C10-30 Alkyl Acrylate Crosspolymer

Emulsion Stabilising

Crithmum Maritimum Callus Culture Filtrate

Skin Protecting

Beta-Sitosterol

Emulsion Stabilising
Helps hydrate Dry Skin Icon

Copper Tripeptide-1

Skin Conditioning
Peptide IconHelps with Anti-Aging IconGood for Scar Healing IconGood for Barrier Repair Icon

Bis(Tripeptide-1) Copper Acetate

Skin Conditioning
Peptide Icon

Methionine

Skin Conditioning

Soy Isoflavones

Skin Conditioning

Octapeptide-2

Skin Conditioning
Peptide Icon

Apigenin

Antioxidant
Antioxidant Icon

Oleanolic Acid

Skin Conditioning

PPG-26-Buteth-26

Skin Conditioning

Butylene Glycol

Humectant
1 / 0 Helps hydrate Dry Skin IconGood for Barrier Repair Icon

PEG-40 Hydrogenated Castor Oil

Emulsifying
Oil IconNot safe for Fungal Acne Icon

Dextran

Helps hydrate Dry Skin Icon

Sodium Hydroxide

Buffering

Phenoxyethanol

Preservative
Preservative Icon

Caprylyl Glycol

Emollient
Fatty Alcohol Icon

Sorbic Acid

Preservative
Preservative Icon

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Ingredients Explained

These ingredients are found in both products.

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

Humectant, Masking, Skin Conditioning

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

Overall, Butylene Glycol is a safe and well-rounded ingredient that works well with other ingredients.

Though this ingredient works well with most skin types, some people with sensitive skin may experience a reaction such as allergic rashes, closed comedones, or itchiness.

Learn more about Butylene Glycol
Emollient, Humectant, Skin Conditioning

Caprylyl Glycol is a humectant, skin conditioner, emollient, and preservative booster derived from either caprylic acid or synthetically created.

Typical use levels vary from 0.3-1% as a preservative booster and go up to 2% to condition skin.

Because it is not a free-fatty acid or alcohol, this ingredient is fungal acne safe (there's nothing for Malassezia to feed on).

Learn more about Caprylyl Glycol
Skin Conditioning

Copper Tripeptide-1 (GHK-Cu) is a skin repairing ingredient known for its ability to boost collagen, improve firmness, and support skin regeneration.

It is a complex made up of a naturally occurring peptide (glycine-histidine-lysine) and copper, an essential trace element.

While studying wound healing, researchers noticed GHK-Cu stimulated hair follicle enlargement and growth by keeping hair in its active growth phase longer. This has made it a promising ingredient for hair regrowth treatments.

Some people have reported increased facial hair. While GHK-Cu can make your hair follicles bigger, it usually doesn’t turn soft, barely-visible facial hairs into thick, dark ones.

Anecdotal reports suggest that overusing copper peptides might lead to premature aging due to excess free copper or enzyme imbalances. This claim isn’t backed by large-scale studies.

Unfortunately, there are limited human studies for this ingredient. While early results are promising, many studies are either small, in-vitro, or not rigorously controlled.

For example, there is a 1998 study that explored the effects of copper tripeptide, vitamin C, tretinoin, and melatonin on skin repair and collagen synthesis.

After one month, increased procollagen production was seen in 7 out of 10 participants using copper tripeptide (more than those using vitamin C, melatonin, or tretinoin.

While the study was exploratory, it offers early evidence that copper tripeptide may support collagen production. Larger, well-designed trials are still needed to confirm its potential and understand individual responses.

Read more about other common types of peptides here:

Learn more about Copper Tripeptide-1
Humectant, Skin Conditioning, Skin Protecting

Glycerin (or glycerol) is a compound naturally found in your skin. It's a powerhouse humectant that pulls water into the stratum corneum.

Topically, glycerin does several things at once:

Your skin makes glycerin on its own (mostly from sebaceous oil breakdown) and shuttles it to your outermost layer of skin, or your epidermis, via aquaporin-3.

Aquaporin-3 is a transporter that is essential for normal skin hydration, elasticity, and repair. Interestingly, mice lacking in AQP3 have dry and less elastic skin that can be fully corrected with glycerin.

This ingredient is non-irritating, plays well with almost every ingredient, and works across all skin types. Typical use is anywhere between 3-10% but can go up to 79% in some leave-on products.

Just know very high concentrations (>40%) can feel tacky in low humidity.

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

Learn more about Glycerin
Buffering, Skin Conditioning

Glycine is the smallest amino acid and a key building block of collagen. It's part if your skin's Natural Moisturizing Factor (NMF), or the water-loving molecules in your outermost layer of skin (stratum corneum) that keeps everything hydrated and happy.

A study from 2022 found that an amino acid complex featuring taurine, arginine, and glycine significantly reduced skin irritation, improved redness, and accelerated the skin repair process.

Skin Conditioning

Palmitoyl Tripeptide-1 is also known as pal-GHK. It is made up of 3 amino acids and palmitic acid, a fatty acid that helps it absorb into skin more easily.

This peptide is as a signal peptide, meaning it tells the skin to produce more collagen. Collagen is the key protein that helps form the skin's structure and keep it plump, firm, and hydrated.

By boosting collagen production, this ingredient supports a stronger skin barrier and helps reduce the appearance of wrinkles.

You'll most likely see this ingredient paired with Palmitoyl Tetrapeptide-7 in the well-known Matrixyl 3000 complex. While results from in-house testing should be viewed cautiously, this peptide duo is among the most studied and widely used in modern skincare.

Due to its palmitic acid base, this ingredient may not be safe for Malassezia folliculitis.

Read more about other common types of peptides here:

Learn more about Palmitoyl Tripeptide-1
Preservative

Phenoxyethanol is a preservative that has germicide, antimicrobial, and aromatic properties. Studies show that phenoxyethanol can prevent 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.

Buffering

Sodium Hydroxide is also known as lye or caustic soda. It is used to adjust the pH of products; many ingredients require a specific pH to be effective.

In small amounts, sodium hydroxide is considered safe to use. However, large amounts may cause chemical burns due to its high alkaline.

Your skin has a natural pH and acid mantle. This acid mantle helps prevent harmful bacteria from breaking through. The acid mantle also helps keep your skin hydrated.

"Alkaline" refers to a high pH level. A low pH level would be considered acidic.

Learn more about Sodium Hydroxide
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.

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. If you see this, drink a glass of water. Remember to stay hydrated!

Learn more about Water

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