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Olay Vitamin C + Peptide 24 Brightening Serum Versus Kiehl's Midnight Recovery Concentrate

Olay Vitamin C + Peptide 24 Brightening Serum Versus Kiehl's Midnight Recovery Concentrate This brightening serum is formulated around Niacinamide and Lactic Acid to brighten dull-looking skin and refine skin texture. This barrier-repair oil is formulated arou

By Peptide Skincare & Beauty Editorial TeamPublished

Olay Vitamin C + Peptide 24 Brightening Serum Versus Kiehl's Midnight Recovery Concentrate

This brightening serum is formulated around Niacinamide and Lactic Acid to brighten dull-looking skin and refine skin texture.

This barrier-repair oil is formulated around Squalane and Rosa Canina Fruit Oil to strengthen the skin barrier and hydrate skin.

What's inside

Key Ingredients

Benefits

Concerns

Ingredients Side-by-side

Water

Glycerin

Dimethicone

Niacinamide

Lactic Acid

Polyacrylate Crosspolymer-6

3-O-Ethyl Ascorbic Acid

Palmitoyl Pentapeptide-4

Panthenol

Trehalose

PEG-11 Methyl Ether Dimethicone

Sodium Lactate

Sodium Benzoate

Parfum

Hydroxylauric Acid

Ascorbic Acid

Avena Sativa Peptide

Water, Glycerin, Dimethicone, Niacinamide, Lactic Acid, Polyacrylate Crosspolymer-6, 3-O-Ethyl Ascorbic Acid, Palmitoyl Pentapeptide-4, Panthenol, Trehalose, PEG-11 Methyl Ether Dimethicone, Sodium Lactate, Sodium Benzoate, Parfum, Hydroxylauric Acid, Ascorbic Acid, Avena Sativa Peptide

Caprylic/Capric Triglyceride

Dicaprylyl Carbonate

Squalane

Rosa Canina Fruit Oil

Oenothera Biennis Oil

Simmondsia Chinensis Seed Oil

Coriandrum Sativum Seed Oil

Tocopherol

Lavandula Angustifolia Oil

Pelargonium Graveolens Flower Oil

Linalool

Rosmarinus Officinalis Leaf Oil

Citronellol

Geraniol

Lavandula Hybrida Oil

Cucumis Sativus Extract

Cucumis Sativus Fruit Extract

Curcuma Longa Root Extract

Limonene

Citral

Sclareolide

Rosa Damascena Flower Oil

Jasminum Officinale Extract

Jasminum Sambac Flower Extract

Helianthus Annuus Seed Oil

Caprylic/Capric Triglyceride, Dicaprylyl Carbonate, Squalane, Rosa Canina Fruit Oil, Oenothera Biennis Oil, Simmondsia Chinensis Seed Oil, Coriandrum Sativum Seed Oil, Tocopherol, Lavandula Angustifolia Oil, Pelargonium Graveolens Flower Oil, Linalool, Rosmarinus Officinalis Leaf Oil, Citronellol, Geraniol, Lavandula Hybrida Oil, Cucumis Sativus Extract, Cucumis Sativus Fruit Extract, Curcuma Longa Root Extract, Limonene, Citral, Sclareolide, Rosa Damascena Flower Oil, Jasminum Officinale Extract, Jasminum Sambac Flower Extract, Helianthus Annuus Seed Oil

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The reference edit

Ingredients, questions
& further reading.

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

01

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. 10Niacinamide is a multitasking form of vitamin B3 that strengthens the skin barrier, reduces pores and dark spots, regulates oil, and improves signs of aging.
  11. 11And the best part? It's gentle and well-tolerated by most skin types, including sensitive and reactive skin.
  12. 12You might have heard of "niacin flush", or the reddening of skin that causes itchiness. Niacinamide has not been found to cause this.
  13. 13In very rare cases, some individuals may not be able to tolerate niacinamide at all or experience an allergic reaction to it.
  14. 14If you are experiencing flaking, irritation, and dryness with this ingredient, be sure to double check all your products as this ingredient can be found in all categories of skincare.
  15. 15When incorporating niacinamide into your routine, look out for concentration amounts. Typically, 5% niacinamide provides benefits such as fading dark spots. However, if you have sensitive skin, it is better to begin with a smaller concentration.
  16. 16When you apply niacinamide to your skin, your body converts it into nicotinamide adenine dinucleotide (NAD). NAD is an essential coenzyme that is already found in your cells as "fuel" and powers countless biological processes.
  17. 17In your skin, NAD helps repair cell damage, produce new healthy cells, support collagen production, strengthen the skin barrier, and fight environmental stressors (like UV and pollution).
  18. 18Our natural NAD levels start to decline with age, leading to slower skin repair, visible aging, and a weaker skin barrier. By providing your skin niacinamide, you're recharging your skin's NAD levels. This leads to stronger, healthier, and younger l…
  19. 19Another name for vitamin B3 is nicotinamide. This vitamin is water-soluble and our bodies don't store it. We obtain Vitamin B3 from either food or skincare. Meat, fish, wheat, yeast, and leafy greens contain vitamin B3.
  20. 20The type of niacinamide used in skincare is synthetically created.
Source · skinsort.com ⟶
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