Peptide Skincare & BeautySkin science and ingredient guides

Skin science article

Paula's Choice Skin Recovery Enriched Calming Toner Versus Thayers Witch Hazel Facial Toner

Paula's Choice Skin Recovery Enriched Calming Toner Versus Thayers Witch Hazel Facial Toner This barrier-repair toner is formulated around Oenothera Biennis Oil and Borago Officinalis Seed Oil to strengthen the skin barrier and calm redness. This hydrating ton

Paula's Choice Skin Recovery Enriched Calming Toner Versus Thayers Witch Hazel Facial Toner

This barrier-repair toner is formulated around Oenothera Biennis Oil and Borago Officinalis Seed Oil to strengthen the skin barrier and calm redness.

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

What's inside

Key Ingredients

No key ingredients

Benefits

Concerns

Ingredients Side-by-side

Water

Cyclopentasiloxane

Butylene Glycol

Glycereth-26

Dimethiconol

Oenothera Biennis Oil

Borago Officinalis Seed Oil

Sodium Hyaluronate

Tocopheryl Acetate

Tocopherol

Ascorbyl Palmitate

Panthenol

Allantoin

Glycerin

Hydrogenated Lecithin

Caprylic/Capric Triglyceride

Niacinamide

Superoxide Dismutase

PEG-40 Hydrogenated Castor Oil

Myristamidopropyl Pg-Dimonium Chloride Phosphate

Laureth-4

Laureth-23

Disodium EDTA

Sodium Benzoate

Chlorphenesin

Phenoxyethanol

Benzoic Acid

Sorbic Acid

Water, Cyclopentasiloxane, Butylene Glycol, Glycereth-26, Dimethiconol, Oenothera Biennis Oil, Borago Officinalis Seed Oil, Sodium Hyaluronate, Tocopheryl Acetate, Tocopherol, Ascorbyl Palmitate, Panthenol, Allantoin, Glycerin, Hydrogenated Lecithin, Caprylic/Capric Triglyceride, Niacinamide, Superoxide Dismutase, PEG-40 Hydrogenated Castor Oil, Myristamidopropyl Pg-Dimonium Chloride Phosphate, Laureth-4, Laureth-23, Disodium EDTA, Sodium Benzoate, Chlorphenesin, Phenoxyethanol, Benzoic Acid, Sorbic Acid

Hamamelis Virginiana Bark/Leaf/Twig Extract

Aloe Barbadensis Leaf Extract

Rosa Centifolia Flower Water

Parfum

Caprylyl Glycol

Ethylhexylglycerin

Citric Acid

Potassium Hydroxide

Water, Glycerin, Hamamelis Virginiana Bark/Leaf/Twig Extract, Aloe Barbadensis Leaf Extract, Rosa Centifolia Flower Water, Parfum, Phenoxyethanol, Caprylyl Glycol, Ethylhexylglycerin, Citric Acid, Potassium Hydroxide

Reviews

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.

Phenoxyethanol is one of the most widely used preservatives in skincare (and for good reason!).

It has a large spectrum of antimicrobial activity and especially effective bacteria, yeast, and mold while only having a weak effect on your skin's natural microbiome.

On a cellular level, it disrupts the cell membranes of microbes by poking holes that make the cell leak. This shuts down the chemical reactions the microbe needs to make energy so it can no longer survive.

Another perk of this ingredient is that it stays functional across a wide pH range (3-10).

You'll often see it paired with boosters like Ethylhexylglycerin; one study showed that a 1:9 ratio of Ethylhexylglycerin to Phenoxyethanol damages bacterial membranes as effectively as doubling the Phenoxyethanol concentration on its own.

Typical use concentrations range from 0.3-1% depending on the formula, and this ingredient is capped at 1% int the EU.

Safety-wise, the fear mongering does not hold up to the evidence. The EU's Scientific Committee on Consumer Safety and FDA consider it safe as a preservative at up to 1%, including for children of all ages.

Adverse systemic effects only showed up in animal studies at exposures roughly 200x higher than what people get from cosmetics. And despite its very widespread use, this ingredient is a rare sensitizer and allergic reactions are uncommon.

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!

Similar Comparisons

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. 03Caprylyl Glycol is a humectant, skin conditioner, emollient, and preservative booster derived from either caprylic acid or synthetically created.
  4. 04Typical use levels vary from 0.3-1% as a preservative booster and go up to 2% to condition skin.
  5. 05Because it is not a free-fatty acid, this ingredient is fungal acne safe (there's nothing for Malassezia to feed on).
  6. 06Disodium EDTA is a chelating agent. It grabs onto and deactivates metal ions that sneak into your products from water, packaging, or air.
  7. 07This ingredient mainly works behind the scenes and helps with:
  8. 08On top of that, this ingredient can counteract the effects of hard water by binding to the minerals in it.
  9. 09One thing worth knowing is that Disodium EDTA has been shown to be a mild penetration enhancer. It can help other ingredients absorb into skin more effectively which can be a double-edged sword (great for actives, but can also make the active too st…
  10. 10Clinical patch testing showed no significant skin irritation at typical use concentrations and minimal dermal absorption.
  11. 11You'll most likely see this ingredient near the end of an ingredient list. It's typically found in concentrations less than 1%.
  12. 12Glycerin (or glycerol) is a compound naturally found in your skin. It's a powerhouse humectant that pulls water into the stratum corneum.
  13. 13Topically, glycerin does several things at once:
  14. 14Your 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.
  15. 15Aquaporin-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.
  16. 16This 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.
  17. 17Just know very high concentrations (>40%) can feel tacky in low humidity.
  18. 18Glycerin is the name for this ingredient in American English. British English uses Glycerol/Glycerine.
  19. 19Hexylene Glycol is a multitasker ingredient that works as a solvent, humectant, emulsifier, viscosity reducer, and preservative booster.
  20. 20It is able to dissolve both water and oil-soluble ingredients to stabilize tricky actives and make products spread more easily.
Source · skinsort.com
02

Product index

Related product references

03

Comparison edit

Read side by side