Kosas Plump + Juicy Vegan Collagen Spray-On Serum Versus Glow Recipe Strawberry BHA Pore-Smooth Blur Drops

Kosas Plump + Juicy Vegan Collagen Spray-On Serum Versus Glow Recipe Strawberry BHA Pore-Smooth Blur Drops

This barrier-repair serum is formulated around Lactobacillus Ferment to strengthen the skin barrier.

This oil-control treatment is formulated around Salicylic Acid and Salix Alba Bark Extract to balance excess oil and refine the look of pores.

What's inside

Key Ingredients

Benefits

Concerns

Ingredients Side-by-side

Water

Propanediol

Pentylene Glycol

Glycerin

Phenethyl Alcohol

Hydrolyzed Rice Protein

Hydrolyzed Vegetable Protein

Polyglyceryl-6 Caprylate

Polyglyceryl-3 Cocoate

Polyglyceryl-4 Caprate

Polyglyceryl-6 Ricinoleate

Sodium Gluconate

Erythritol

Hydrolyzed Pea Protein

Caprylic/Capric Triglyceride

Maltodextrin

Acacia Seyal Gum Extract

Lactobacillus Ferment

Artemisia Capillaris Flower Extract

Hibiscus Sabdariffa Fruit Extract

Hibiscus Sabdariffa Flower Extract

Glycine

Proline

Hydrolyzed Sodium Hyaluronate

Sodium Hyaluronate

Palmitoyl Tripeptide-37

Potassium Sorbate

Citric Acid

Benzyl Alcohol

Sodium Benzoate

Water, Propanediol, Pentylene Glycol, Glycerin, Phenethyl Alcohol, Hydrolyzed Rice Protein, Hydrolyzed Vegetable Protein, Polyglyceryl-6 Caprylate, Polyglyceryl-3 Cocoate, Polyglyceryl-4 Caprate, Polyglyceryl-6 Ricinoleate, Sodium Gluconate, Erythritol, Hydrolyzed Pea Protein, Caprylic/Capric Triglyceride, Maltodextrin, Acacia Seyal Gum Extract, Lactobacillus Ferment, Artemisia Capillaris Flower Extract, Hibiscus Sabdariffa Fruit Extract, Hibiscus Sabdariffa Flower Extract, Glycine, Proline, Hydrolyzed Sodium Hyaluronate, Sodium Hyaluronate, Palmitoyl Tripeptide-37, Potassium Sorbate, Citric Acid, Benzyl Alcohol, Sodium Benzoate

Tapioca Starch

Isopentyldiol

Nylon-12

C9-12 Alkane

Distarch Phosphate

Ammonium Acryloyldimethyltaurate/Vp Copolymer

Saccharide Isomerate

Fragaria Vesca Leaf Extract

Salicylic Acid

Salix Alba Bark Extract

Fragaria Vesca Fruit Extract

Leuconostoc/Radish Root Ferment Filtrate

Bisabolol

Coco-Caprylate/Caprate

Triheptanoin

Butylene Glycol

Caprylyl Glycol

Polyglyceryl-10 Dioleate

Dilinoleic Acid/Butanediol Copolymer

Polyglyceryl-10 Dipalmitate

Ethylhexylglycerin

Sodium Hydroxide

1,2-Hexanediol

Phenoxyethanol

Castor Oil/Ipdi Copolymer

Parfum

Water, Tapioca Starch, Isopentyldiol, Nylon-12, C9-12 Alkane, Distarch Phosphate, Ammonium Acryloyldimethyltaurate/Vp Copolymer, Saccharide Isomerate, Fragaria Vesca Leaf Extract, Salicylic Acid, Salix Alba Bark Extract, Fragaria Vesca Fruit Extract, Leuconostoc/Radish Root Ferment Filtrate, Sodium Hyaluronate, Bisabolol, Coco-Caprylate/Caprate, Triheptanoin, Butylene Glycol, Pentylene Glycol, Propanediol, Caprylyl Glycol, Polyglyceryl-10 Dioleate, Dilinoleic Acid/Butanediol Copolymer, Polyglyceryl-10 Dipalmitate, Ethylhexylglycerin, Sodium Hydroxide, 1,2-Hexanediol, Phenoxyethanol, Castor Oil/Ipdi Copolymer, Citric Acid, Parfum

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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.

Citric Acid is an alpha hydroxy acid (AHA) naturally found in citrus fruits like oranges, lemons, and limes.

Like other AHAs, citric acid can exfoliate skin by breaking down the bonds that hold dead skin cells together. This helps reveal smoother and brighter skin underneath.

However, this exfoliating effect only happens at high concentrations (20%) which can be hard to find in cosmetic products.

Due to this, citric acid is usually included in small amounts as a pH adjuster. This helps keep products slightly more acidic and compatible with skin's natural pH.

In skincare formulas, citric acid can:

While it can provide some skin benefits, research shows lactic acid and glycolic acid are generally more effective and less irritating exfoliants.

Most citric acid used in skincare today is made by fermenting sugars (usually from molasses). This synthetic version is identical to the natural citrus form but easier to stabilize and use in formulations.

Rosacea skin has a lower threshold for acids generally, with 62.5% of rosacea subjects in one study reacting to lactic acid in a sting test. This is why we mark citric acid as a potential rosacea trigger.

However, this ingredient shows up as a pH adjuster or chelator at roughly 0.1-1% in many products. These low levels are unlikely to be an issue for rosacea skin and becomes a potential trigger at exfoliating concentrations (20%). Because everybody's skin is unique, we recommend a patch test if you are unsure.

Pentylene Glycol (1,2-pentanediol) is a multitasking little diol with three main roles in a formula:

Research on alkanediols (the family pentylene glycol belongs to) show they work by disrupting microbial cell membranes. This disruption helps the primary preservative system in a product work more effectively at lower doses.

On the safety side, the Cosmetic Ingredient Review Expert Panel has concluded this ingredient to be safe as used in current cosmetic practices + concentrations.

Typical use levels in a formula run about 1-5%.

Propanediol is an all-star ingredient. It softens, hydrates, and smooths the skin.

It’s often used to:

Propanediol is not likely to cause sensitivity and considered safe to use. It is derived from corn or petroleum with a clear color and no scent.

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.

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!

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