Cos De BAHA AH Aloe Leaf Ext Hyaluronic Acid Serum Versus Cota Skin 24K Gold Serum

Cos De BAHA AH Aloe Leaf Ext Hyaluronic Acid Serum Versus Cota Skin 24K Gold Serum

This hydrating serum is formulated around Aloe Barbadensis Leaf Extract and Sodium Hyaluronate to hydrate skin and calm redness.

This hydrating serum is formulated around Aloe Barbadensis Leaf Extract and Allantoin to hydrate skin and calm redness.

What's inside

Key Ingredients

Benefits

Ingredients Side-by-side

Aloe Barbadensis Leaf Extract 92.5%

Betaine

1,2-Hexanediol

Sodium Hyaluronate

Allantoin

Aloe Barbadensis Leaf Extract 92.5%, Betaine, 1,2-Hexanediol, Sodium Hyaluronate, Allantoin

Water

Glycol

Glyceryl Polyacrylate

Glycerin

Dendrobium Nobile Stem Extract

Sophora Angustifolia Root Extract

Aloe Barbadensis Leaf Extract

Echinacea Purpurea Extract

Lycium Barbarum Fruit Extract

Polyacrylic Acid

Hydrogenated Starch Hydrolysate

Pvm/Ma Copolymer

Xanthan Gum

Hydroxyacetophenone

Water, Glycol, Glyceryl Polyacrylate, Glycerin, Dendrobium Nobile Stem Extract, Sophora Angustifolia Root Extract, Aloe Barbadensis Leaf Extract, Echinacea Purpurea Extract, Lycium Barbarum Fruit Extract, Polyacrylic Acid, Betaine, Hydrogenated Starch Hydrolysate, Pvm/Ma Copolymer, Allantoin, Sodium Hyaluronate, Xanthan Gum, Hydroxyacetophenone, 1,2-Hexanediol

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Alternatives

Ingredients Explained

These ingredients are found in both products.

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

1,2-Hexanediol is a synthetic liquid and another multi-functional powerhouse.

It is a:

Humectant, drawing moisture into the skin

Emollient, helping to soften skin

Solvent, dispersing and stabilizing formulas

Preservative booster, enhancing the antimicrobial activity of other preservatives

Allantoin is a soothing ingredient known for its protective and moisturizing properties; it's basically a quiet workhorse ingredient you can find in a huge range of cosmetics.

Though it can be derived from the comfrey plant, allantoin is produced synthetically for cosmetic products to ensure purity.

Research shows it can encourage your skin cells to turn over and renew by stimulating keratinocyte and fibroblast proliferation.

It also has mild keratolytic properties to help loosen and shed dead skin cells without being harsh.

Studies also suggest allantoin can help calm inflammation by dialing down some of the chemical signals your skin sends out when it is irritated.

This ingredient is typically used in the 0.1-0.5% range, and the FDA recognizes it as a skin protectant in OTC products up to 2%.

Overall, allantoin is a wonderful addition to most routines; it is stable across a wide pH range (~4-8), works well with other ingredients, and is considered non-sensitizing/non-irritating.

Fun fact: Allantoin is naturally occurring in comfrey root, beets, chamomile, and wheat sprouts. Our bodies even produce it as a byproduct of uric acid metabolism.

Aloe Barbadensis Leaf Extract is a botanical extract pulled from the leaves of aloe vera and one of the most studied plant ingredients in cosmetics.

The inner leaf gel it comes from is mostly water (~99-99.5%) and the remaining fraction is made up of pretty good stuff: polysaccharides, vitamins, phenolics, and enzymes.

Its headline job is hydration.

The star polysaccharide in aloe, acemannan, is a humectant that retains moisture and helps reduce trans-epidermal water loss.

Aloe also has real soothing credentials; it contains anti-inflammatory compounds like bradykinase and C-glucosyl chromone that help calm irritation and redness.

On the repair side, lab work shows that acemannan wakes up your skin's repair cells (fibroblasts), prompting them to multiply and speed up healing.

There's some human data for cosmetic benefit too: a cream containing 10% Aloe Barbadensis leaf extract improved skin hydration and elasticity in a real-use study.

Safety-wise, this ingredient is well-regarded with just one rare downside; there have been some case reports of acute eczema, contact urticaria, and dermatitis in people who applied aloe-derived ingredients topically. Those with a known aloe or Liliaceae sensitivity should patch test.

Typical use levels range widely, from under 1% up to 90%+ depending on the format and the effect you are after.

Betaine is a humectant. Like hyaluronic acid, it helps attract and retain moisture in the skin. It’s known for being gentle and for helping the skin maintain balanced hydration.

Betaine is mainly used to improve hydration and support calmer skin. It helps skin cells regulate water balance because it functions as an osmolyte.

Some studies suggest betaine may support making skin tone more even.

Fun fact: Betaine naturally exists in the skin and the body. In cosmetic products, it can be either plant-derived (most commonly from sugar beets) or synthetically produced for consistency and stability.

Betaine is also known as trimethylglycine.

Sodium Hyaluronate is the salt form of hyaluronic acid. It is a long sugar chain that is naturally found in your skin, joints, and connective tissue that maintains hydration and elasticity.

In skincare, it works as a humectant. It pulls water from the environment and deeper layers of skin and binds it to the surface.

Interestingly, the size of the molecule affects its behavior:

Some clinical evidence links low molecular weight versions to improved wrinkle depth, elasticity, anti-inflammatory effects, and barrier repair.

Many serums use a blend of both weights so you can get surface hydration plus longer-lasting and deeper effects.

You'll typically see concentrations between 0.1-2% for this ingredient.

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