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Hydropeptide Firma-Bright 20% Vitamin C Booster Versus Kiehl's Powerful-Strength Vitamin C Serum

Hydropeptide Firma-Bright 20% Vitamin C Booster Versus Kiehl's Powerful-Strength Vitamin C Serum This brightening serum is formulated around Sodium Ascorbyl Phosphate and Niacinamide to brighten dull-looking skin and soften the look of wrinkles. This anti-agin

By Peptide Skincare & Beauty Editorial TeamPublished

Hydropeptide Firma-Bright 20% Vitamin C Booster Versus Kiehl's Powerful-Strength Vitamin C Serum

This brightening serum is formulated around Sodium Ascorbyl Phosphate and Niacinamide to brighten dull-looking skin and soften the look of wrinkles.

This anti-aging serum is formulated around Ascorbic Acid and Ascorbyl Glucoside to soften the look of wrinkles and brighten dull-looking skin.

What's inside

Key Ingredients

Benefits

Concerns

Ingredients Side-by-side

Water

Sodium Ascorbyl Phosphate

Pentylene Glycol

Glycerin

Niacinamide

Propanediol

Carrageenan

Erythritol

Sodium PCA

Xanthan Gum

1,2-Hexanediol

Hydroxyacetophenone

Acetyl Hexapeptide-8

Caprylyl Glycol

Disodium Phosphate

Sodium Phosphate

Sodium Hyaluronate

Anogeissus Leiocarpus Bark Extract

Sodium Phytate

Hydrangea Arborescens Root Extract

Morus Alba Root Extract

Polysorbate 20

Resveratrol

Scutellaria Lateriflora Extract

Pentapeptide-21

Avena Sativa Kernel Extract

Water, Sodium Ascorbyl Phosphate, Pentylene Glycol, Glycerin, Niacinamide, Propanediol, Carrageenan, Erythritol, Sodium PCA, Xanthan Gum, 1,2-Hexanediol, Hydroxyacetophenone, Acetyl Hexapeptide-8, Caprylyl Glycol, Disodium Phosphate, Sodium Phosphate, Sodium Hyaluronate, Anogeissus Leiocarpus Bark Extract, Sodium Phytate, Hydrangea Arborescens Root Extract, Morus Alba Root Extract, Polysorbate 20, Resveratrol, Scutellaria Lateriflora Extract, Pentapeptide-21, Avena Sativa Kernel Extract

Propylene Glycol

Dimethicone

Ascorbic Acid

Ethylhexyl Palmitate

Cetyl PEG/PPG-10/1 Dimethicone

Dimethicone Crosspolymer

Ascorbyl Glucoside

Cyclohexasiloxane

Hydroxyethylpiperazine Ethane Sulfonic Acid

Lauroyl Lysine

Acrylonitrile/Methyl Methacrylate/Vinylidene Chloride Copolymer

Polysilicone-11

Adenosine

Hydrolyzed Hyaluronic Acid

Limonene

Isobutane

Citrus Aurantium Dulcis Peel Oil

Citrus Limon Peel Oil

Citral

Pentaerythrityl Tetra-Di-T-Butyl Hydroxyhydrocinnamate

Propylene Glycol, Dimethicone, Glycerin, Ascorbic Acid, Ethylhexyl Palmitate, Cetyl PEG/PPG-10/1 Dimethicone, Dimethicone Crosspolymer, Ascorbyl Glucoside, Cyclohexasiloxane, Hydroxyethylpiperazine Ethane Sulfonic Acid, Lauroyl Lysine, Acrylonitrile/Methyl Methacrylate/Vinylidene Chloride Copolymer, Polysilicone-11, Adenosine, Hydrolyzed Hyaluronic Acid, Limonene, Isobutane, Citrus Aurantium Dulcis Peel Oil, Citrus Limon Peel Oil, Citral, Pentaerythrityl Tetra-Di-T-Butyl Hydroxyhydrocinnamate

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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.

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.

Similar Comparisons

The reference edit

Ingredients, questions
& further reading.

Connected source records selected through this article’s public topic index.

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Formula cabinet

Ingredients & structured notes

Ingredient index

Ingredients Explained

  1. 01These ingredients are found in both products.
  2. 02Ingredients higher up in an ingredient list are typically present in a larger amount.
  3. 03Glycerin (or glycerol) is a compound naturally found in your skin. It's a powerhouse humectant that pulls water into the stratum corneum.
  4. 04Topically, glycerin does several things at once:
  5. 05Your 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.
  6. 06Aquaporin-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.
  7. 07This 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.
  8. 08Just know very high concentrations (>40%) can feel tacky in low humidity.
  9. 09Glycerin is the name for this ingredient in American English. British English uses Glycerol/Glycerine.
  10. 10Pentylene Glycol (1,2-pentanediol) is a multitasking little diol with three main roles in a formula:
  11. 11Research 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.
  12. 12On the safety side, the Cosmetic Ingredient Review Expert Panel has concluded this ingredient to be safe as used in current cosmetic practices + concentrations.
  13. 13Typical use levels in a formula run about 1-5%.
  14. 14Water. 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.
  15. 15So why is it so popular? Water most often acts as a solvent - this means that it helps dissolve other ingredients into the formulation.
  16. 16You'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!
  17. 17Xanthan 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.
  18. 18On the technical side of things, xanthan gum is a polysaccharide - a combination consisting of multiple sugar molecules bonded together.
  19. 19Xanthan gum is a pretty common and great ingredient. It is a natural, non-toxic, non-irritating ingredient that is also commonly used in food products.
Source · skinsort.com ⟶
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Product index

Related product references

Product

HydroPeptide Firma Bright

HydroPeptide Firma Bright HydroPeptide Firma Bright ingredients explained: Water, Sodium Ascorbyl Phosphate, Pentylene Glycol, Glycerin, Niacinamide, Propanediol, Carrageenan, Erythritol, S…

Source: incidecoder.comView reference →
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Comparison edit

Read side by side

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