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Kiehl's
Age Defender Power Serum

Versus

it Cosmetics
Bye Bye Dark Spots Niacinamide Serum

Product category and function

Age Defender Power Serum

Bye Bye Dark Spots Niacinamide Serum

Serums/Treatments	Serums/Treatments
Concentrated formulas for hydrating and addressing skin issues.	Concentrated formulas for hydrating and addressing skin issues.
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Ingredient highlights

Age Defender Power Serum

Bye Bye Dark Spots Niacinamide Serum

Ingredient info	Ingredient info
Alcohol-free Paraben-free SLS-free Mica-free Fragrance-free	Alcohol-free Paraben-free SLS-free Mica-free Fragrance-free

Full ingredient list

Age Defender Power Serum

Bye Bye Dark Spots Niacinamide Serum

No. of common ingredients = 0
Aqua/water, glycerin, dimethicone, alcohol denat., isononyl isononanoate, butylene glycol, ammonium polyacryloyldimethyl taurate, phenoxyethanol, pentylene glycol, hydrolyzed soy protein, parfum/fragrance, hydroxypropyl tetrahydropyrantriol, propylene glycol, ruscus aculeatus root extract, glycine soja oil/soybean oil, caffeine, tocopherol, hydrolyzed rice protein, limonene, biosaccharide gum-1, disodium edta, adenosine, t-butyl alcohol, hydroxypalmitoyl sphinganine, cryptomeria japonica bud extract, linalool, citral 10	Aqua/water/eau, propylene glycol, glycerin, niacinamide, peg/ppg/polybutylene glycol-8/5/3 glycerin, hydroxypropyl tetrahydropyrantriol, caffeine, 3-o-ethyl ascorbic acid, citric acid, phenoxyethanol, ppg-6-decyltetradeceth-30, salicylic acid, xanthan gum, sodium citrate, hydroxyethylcellulose, potassium hydroxide, disodium edta, limonene, geraniol, citronellol, tocopherol, parfum.

No. of common ingredients = 0

Total Number of ingredients = 27

Total Number of ingredients = 22

Aqua/water, glycerin, dimethicone, alcohol denat., isononyl isononanoate, butylene glycol, ammonium polyacryloyldimethyl taurate, phenoxyethanol, pentylene glycol, hydrolyzed soy protein, parfum/fragrance, hydroxypropyl tetrahydropyrantriol, propylene glycol, ruscus aculeatus root extract, glycine soja oil/soybean oil, caffeine, tocopherol, hydrolyzed rice protein, limonene, biosaccharide gum-1, disodium edta, adenosine, t-butyl alcohol, hydroxypalmitoyl sphinganine, cryptomeria japonica bud extract, linalool, citral

Aqua/water/eau, propylene glycol, glycerin, niacinamide, peg/ppg/polybutylene glycol-8/5/3 glycerin, hydroxypropyl tetrahydropyrantriol, caffeine, 3-o-ethyl ascorbic acid, citric acid, phenoxyethanol, ppg-6-decyltetradeceth-30, salicylic acid, xanthan gum, sodium citrate, hydroxyethylcellulose, potassium hydroxide, disodium edta, limonene, geraniol, citronellol, tocopherol, parfum.

Notable ingredients

Age Defender Power Serum

Bye Bye Dark Spots Niacinamide Serum

Soothing: Ruscus aculeatus root extract

Antioxidant: Caffeine, Tocopherol

Solvent: Aqua/water, Alcohol denat, Butylene glycol, Glycerin, Limonene, Propylene glycol, T-butyl alcohol, Pentylene glycol

Anti-acne: Niacinamide, Salicylic acid

Soothing: Niacinamide

Skin brightening: Niacinamide, 3-o-ethyl ascorbic acid

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Ingredients with their functions

Age Defender Power Serum

Bye Bye Dark Spots Niacinamide Serum

Aqua/water

Also-called: Aqua, Aqua/Water, Water/Aqua/Eau, Aqua/Water/Eau | Function: Skin conditioning, Solvent

Water serves as a fundamental component in skincare products, often listed as the first ingredient, which means it's the most abundant. It acts as a solvent, helping to dissolve other ingredients and facilitate the application and absorption of products.

Glycerin

Also-called: Glycerol | Function: Skin-identical ingredient, Viscosity controlling, Skin protecting, Skin conditioning, Humectant/Moisturizer, Solvent