Peptide Skincare & BeautySkin science and ingredient guides

Skin science article

Paula's Choice 2% BHA Lotion Exfoliant Versus Some By Mi AHA BHA PHA 30 Days Miracle Exfoliating Toner

Paula's Choice 2% BHA Lotion Exfoliant Versus Some By Mi AHA BHA PHA 30 Days Miracle Exfoliating Toner This smoothing exfoliator is formulated around Salicylic Acid and Camellia Sinensis Leaf Extract to refine skin texture and refine the look of pores. This sm

Paula's Choice 2% BHA Lotion Exfoliant Versus Some By Mi AHA BHA PHA 30 Days Miracle Exfoliating Toner

This smoothing exfoliator is formulated around Salicylic Acid and Camellia Sinensis Leaf Extract to refine skin texture and refine the look of pores.

This smoothing exfoliator is formulated around Niacinamide and Melaleuca Alternifolia Leaf Water to refine skin texture and clear breakouts.

What's inside

Key Ingredients

Benefits

Concerns

Ingredients Side-by-side

Water

Butylene Glycol

Polysorbate 20

Cetyl Alcohol

Salicylic Acid

Ammonium Acryloyldimethyltaurate/Vp Copolymer

Cyclopentasiloxane

Sorbitan Stearate

Camellia Sinensis Leaf Extract

Lauric Acid

Allantoin

Glycerin

Glycyrrhiza Glabra Root Extract

Avena Sativa Kernel Extract

Epilobium Angustifolium Extract

Dimethicone

Xanthan Gum

Magnesium Aluminum Silicate

PEG-40 Hydrogenated Castor Oil

Sodium Hydroxide

Hexylene Glycol

Disodium EDTA

Ethylhexylglycerin

Phenoxyethanol

Caprylyl Glycol

Water, Butylene Glycol, Polysorbate 20, Cetyl Alcohol, Salicylic Acid, Ammonium Acryloyldimethyltaurate/Vp Copolymer, Cyclopentasiloxane, Sorbitan Stearate, Camellia Sinensis Leaf Extract, Lauric Acid, Allantoin, Glycerin, Glycyrrhiza Glabra Root Extract, Avena Sativa Kernel Extract, Epilobium Angustifolium Extract, Dimethicone, Xanthan Gum, Magnesium Aluminum Silicate, PEG-40 Hydrogenated Castor Oil, Sodium Hydroxide, Hexylene Glycol, Disodium EDTA, Ethylhexylglycerin, Phenoxyethanol, Caprylyl Glycol

Dipropylene Glycol

Niacinamide

Melaleuca Alternifolia Leaf Water

Polyglyceryl-4 Caprate

Carica Papaya Fruit Extract

Lens Esculenta Seed Extract

Hamamelis Virginiana Extract

Nelumbo Nucifera Flower Extract

Swiftlet Nest Extract

Sodium Hyaluronate

Fructan

Adenosine

Hydroxyethyl Urea

Xylitol

Lactobionic Acid

Citric Acid

Sodium Citrate

1,2-Hexanediol

Benzyl Glycol

Raspberry Ketone

Mentha Piperita Oil

Water, Butylene Glycol, Dipropylene Glycol, Glycerin, Niacinamide, Melaleuca Alternifolia Leaf Water, Polyglyceryl-4 Caprate, Carica Papaya Fruit Extract, Lens Esculenta Seed Extract, Hamamelis Virginiana Extract, Nelumbo Nucifera Flower Extract, Swiftlet Nest Extract, Sodium Hyaluronate, Fructan, Allantoin, Adenosine, Hydroxyethyl Urea, Xylitol, Salicylic Acid, Lactobionic Acid, Citric Acid, Sodium Citrate, 1,2-Hexanediol, Benzyl Glycol, Ethylhexylglycerin, Raspberry Ketone, Mentha Piperita Oil

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.

Allantoin is a soothing ingredient known for its protective and moisturizing properties; it's basically a quiet workhorse ingredient you can find in a huge range of cosmetics.

Though it can be derived from the comfrey plant, allantoin is produced synthetically for cosmetic products to ensure purity.

Research shows it can encourage your skin cells to turn over and renew by stimulating keratinocyte and fibroblast proliferation.

It also has mild keratolytic properties to help loosen and shed dead skin cells without being harsh.

Studies also suggest allantoin can help calm inflammation by dialing down some of the chemical signals your skin sends out when it is irritated.

This ingredient is typically used in the 0.1-0.5% range, and the FDA recognizes it as a skin protectant in OTC products up to 2%.

Overall, allantoin is a wonderful addition to most routines; it is stable across a wide pH range (~4-8), works well with other ingredients, and is considered non-sensitizing/non-irritating.

Fun fact: Allantoin is naturally occurring in comfrey root, beets, chamomile, and wheat sprouts. Our bodies even produce it as a byproduct of uric acid metabolism.

Butylene Glycol (or BG) is used within cosmetic products for a few different reasons:

Overall, Butylene Glycol is a safe and well-rounded ingredient that works well with other ingredients.

Though this ingredient works well with most skin types, some people with sensitive skin may experience a reaction such as allergic rashes, closed comedones, or itchiness.

Ethylhexylglycerin is created from glycerin. It is a multitasker ingredient that:

The CIR Expert Panel found minimal skin absorption or sensitization of any kind in a safety assessment. Though this ingredient is considered well-tolerated, a small number of cases of allergic dermatitis have been published since 2002. Just be sure to patch test if you are unsure.

Industry-reported use ranges from 8% in rinse-off products and 2% in leave-on formulations.

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.

Salicylic Acid (also known as beta hydroxy acid or BHA) is a well-known ingredient for treating skin that struggles with acne and clogged pores. It exfoliates both the skin's surface and deep within the pores to help clear out buildup, control oil, and reduce inflammation.

Unlike AHAs (alpha hydroxy acids), salicylic acid is oil-soluble. This allows it to penetrate into pores which makes it especially effective for treating blackheads and preventing future breakouts.

Salicylic acid is also known for its soothing properties. It has a similar structure to aspirin and can calm inflamed or irritated skin, making it a good option for acne-prone skin that is also sensitive.

Concentrations of 0.5-2% are recognized by the U.S. FDA as an over-the-counter topical acne product.

It can cause irritation and/or dryness if one's skin already has a compromised moisture barrier, so it's best to focus on repairing that before introducing this ingredient into your routine.

While salicylic acid does not increase sun sensitivity, it’s still important to wear sunscreen daily to protect your skin.

If you are looking for the ingredient called BHA or Butylated Hydroxyanisole, click here.

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. 03Ethylhexylglycerin is created from glycerin. It is a multitasker ingredient that:
  4. 04The CIR Expert Panel found minimal skin absorption or sensitization of any kind in a safety assessment. Though this ingredient is considered well-tolerated, a small number of cases of allergic dermatitis have been published since 2002. Just be sure …
  5. 05Industry-reported use ranges from 8% in rinse-off products and 2% in leave-on formulations.
  6. 06Glycerin (or glycerol) is a compound naturally found in your skin. It's a powerhouse humectant that pulls water into the stratum corneum.
  7. 07Topically, glycerin does several things at once:
  8. 08Your 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.
  9. 09Aquaporin-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.
  10. 10This 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.
  11. 11Just know very high concentrations (>40%) can feel tacky in low humidity.
  12. 12Glycerin is the name for this ingredient in American English. British English uses Glycerol/Glycerine.
  13. 13Niacinamide is a multitasking form of vitamin B3 that strengthens the skin barrier, reduces pores and dark spots, regulates oil, and improves signs of aging.
  14. 14And the best part? It's gentle and well-tolerated by most skin types, including sensitive and reactive skin.
  15. 15You might have heard of "niacin flush", or the reddening of skin that causes itchiness. Niacinamide has not been found to cause this.
  16. 16In very rare cases, some individuals may not be able to tolerate niacinamide at all or experience an allergic reaction to it.
  17. 17If 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.
  18. 18When 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.
  19. 19When 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.
  20. 20In 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).
Source · skinsort.com
02

Product index

Related product references

Product

Paula's Choice BHA 9 Treatment

Paula's Choice BHA 9 Treatment Paula's Choice BHA 9 Treatment ingredients explained: Propylene Glycol⁠, PEG-75 Stearate⁠, PEG-8⁠, Water⁠, Salicylic Acid⁠, Glycerin⁠, Avena Sativa (Oat) Kern…

Source: incidecoder.comView reference →
03

Comparison edit

Read side by side