First Aid Beauty KP Smoothing Body Lotion Versus Peach & Lily KP Bump Boss Smoothing Body Lotion

First Aid Beauty KP Smoothing Body Lotion Versus Peach & Lily KP Bump Boss Smoothing Body Lotion

What's inside

Key Ingredients

Benefits

Concerns

Ingredients Side-by-side

Water

Lactic Acid

Propanediol

C12-15 Alkyl Benzoate

Caprylic/Capric Triglyceride

Silica

Sodium Hydroxide

Palmitic Acid

Dimethicone

Stearic Acid

Glyceryl Stearate

Glyceryl Stearate Se

Glycerin

Urea

Allantoin

Colloidal Oatmeal

Ceramide NP

Camellia Sinensis Leaf Extract

Glycyrrhiza Glabra Root Extract

Chrysanthemum Parthenium Extract

Sodium Phytate

Sodium PCA

Xanthan Gum

Cetearyl Alcohol

Phenoxyethanol

Potassium Sorbate

Sodium Benzoate

Tetrasodium EDTA

Water, Lactic Acid, Propanediol, C12-15 Alkyl Benzoate, Caprylic/Capric Triglyceride, Silica, Sodium Hydroxide, Palmitic Acid, Dimethicone, Stearic Acid, Glyceryl Stearate, Glyceryl Stearate Se, Glycerin, Urea, Allantoin, Colloidal Oatmeal, Ceramide NP, Camellia Sinensis Leaf Extract, Glycyrrhiza Glabra Root Extract, Chrysanthemum Parthenium Extract, Sodium Phytate, Sodium PCA, Xanthan Gum, Cetearyl Alcohol, Phenoxyethanol, Potassium Sorbate, Sodium Benzoate, Tetrasodium EDTA

Isopropyl Myristate

Glycolic Acid

Potassium Hydroxide

Cetearyl Olivate

Sorbitan Olivate

Squalane

Centella Asiatica Extract

Bisabolol

Artemisia Vulgaris Extract

Lactobacillus/Aloe Barbadensis Ferment Filtrate

Prunus Mume Fruit Extract

Pyrus Malus Fruit Extract

Carica Papaya Fruit Extract

Vitis Vinifera Fruit Extract

Sodium Hyaluronate

Butyrospermum Parkii Butter

Collagen Extract

Tremella Fuciformis Extract

Lactobacillus/Soybean Ferment Extract

Dioscorea Japonica Root Extract

1,2-Hexanediol

Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer

Hordeum Distichon Extract

Calendula Officinalis Flower Extract

Tromethamine

Hectorite

Butylene Glycol

Caprylhydroxamic Acid

Caprylyl Glycol

Ethylhexylglycerin

Water, Isopropyl Myristate, Lactic Acid, Urea, Glycolic Acid, Potassium Hydroxide, Glycerin, Cetearyl Alcohol, Cetearyl Olivate, Sorbitan Olivate, Glyceryl Stearate Se, Squalane, Centella Asiatica Extract, Bisabolol, Artemisia Vulgaris Extract, Lactobacillus/Aloe Barbadensis Ferment Filtrate, Prunus Mume Fruit Extract, Pyrus Malus Fruit Extract, Carica Papaya Fruit Extract, Vitis Vinifera Fruit Extract, Sodium Hyaluronate, Butyrospermum Parkii Butter, Collagen Extract, Tremella Fuciformis Extract, Lactobacillus/Soybean Ferment Extract, Dioscorea Japonica Root Extract, 1,2-Hexanediol, Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer, Hordeum Distichon Extract, Calendula Officinalis Flower Extract, Tromethamine, Hectorite, Xanthan Gum, Butylene Glycol, Caprylhydroxamic Acid, Caprylyl Glycol, Ethylhexylglycerin

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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.

Cetearyl alcohol is a waxy mixture of two fatty alcohols: cetyl alcohol and stearyl alcohol. It is an emollient and emulsifier.

Despite having "alcohol" in its name, it has nothing to do with drying solvent alcohols; the FDA also allows "alcohol-free" products to contain fatty alcohols like this ingredient.

It plays several roles in a formula:

Typical use levels for this ingredient sit around 1-10% and the Cosmetic Ingredient Review Expert Panel has affirmed safety at concentrations up to 25% in leave-on products.

Multiple assessments have found it to be non-irritating and non-sensitizing to most people.

However, there have been some cases of allergic contact dermatitis in patients with chronically compromised skin barriers.

Cetearyl alcohol has a comedogenic rating of 2 and irritancy rating of 1. Both of these numbers come from the 1989 study that used rabbit ears; a "2" means mildly comedogenic and a "1" means low irritancy.

Here's the catch: rabbit skin is more sensitive than human skin and throws a lot of false positives. A 1996 reappraisal found that ingredients rated 1-2 in the rabbit ear tests are generally safe for humans.

Remember comedogenic ratings are unable to assess the entire formula of a product or how it will react on your skin. Just be sure to patch test if you are unsure about certain ingredients.

This ingredient is not fungal acne safe. Cetearyl alcohol is a fatty alcohol with chain lengths that fall within the range that Malassezia can metabolize.

A 2019 study has also observed Malassezia growth in the presence of this ingredient, confirming it to be not-fungal acne safe.

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.

Glyceryl Stearate Se is a self-emulsifying (SE) form of glyceryl stearate. Self-emusifying means this ingredient automatically blends with water. It is an emulsifier, emollient, and cleansing agent.

As an emulsifier, Glyceryl Stearate Se prevents ingredients such as oil and water from separating. It is also a surfactant, meaning it helps cleanse the skin. Surfactants help gather oil, dirt, and other pollutants so they may be rinsed away easily.

Emollients help your skin stay smooth and soft. It does so by creating a film on top of the skin that helps trap moisture in.

Lactic Acid is another well-loved alpha hydroxy acid (AHA). It is gentler than glycolic acid but still highly effective.

Its main role is to exfoliate the surface of the skin by loosening the “glue” that holds dead skin cells together. Shedding those old cells leads to smoother, softer, and more even-toned skin.

Because lactic acid molecules are larger than glycolic acid, they don’t penetrate as deeply. This means they’re less likely to sting or irritate, making it a great choice for beginners or those with sensitive skin.

Like glycolic acid, it can:

Lactic acid also acts as a humectant (like hyaluronic acid). It can draw water into the skin to improve hydration and also plays a role in the skin's natural moisturizing factor (NMF) in the form of sodium lactate.

Studies show it can boost ceramide production to strengthen the skin barrier and even help balance the skin’s microbiome.

To get results, choose products with a pH between 3-4.

Lower strengths (5-12%) focus on surface exfoliation; higher strengths (12% and up) can reach deeper in the dermis (deeper, supportive layer) to improve skin texture and firmness over time.

Though it was originally derived from milk, most modern lactic acid used in skincare is vegan. It is made through non-dairy fermentation to create a bio-identical and stable form suitable for all formulations.

When lactic acid shows up near the end of an ingredient list, it usually means the brand added just a tiny amount to adjust the product’s pH.

Legend has it that Cleopatra used to bathe in sour milk to help reduce wrinkles.

Lactic acid is truly a gentle multitasker: it exfoliates, hydrates, strengthens, and brightens. It's a great ingredient for giving your skin a smooth, glowing, and healthy look without the harshness of stronger acids.

Read more about some other popular AHA's here:

Urea is also called carbamide and is the diamide of carbonic acid. In cosmetics, urea is used to hydrate the skin. It also provides exfoliation in higher concentrations.

As a humectant, urea helps draw moisture from the air and from deep within the skin. This helps hydrate your skin. Studies show urea is an effective moisturizer for dry skin conditions. 40% urea is typical in medications for treating eczema and other skin conditions.

Urea has the strongest exfoliation effect in concentrations higher than 10%. It is a keratolytic agent, meaning it breaks down the keratin protein in the top layer of skin. This helps remove dead skin cells and flaking skin.

In medicine, urea has been shown to help increase the potency of other ingredients, such as fungal treatments.

Humans and animals use urea to metabolize nitrogen-containing compounds. Urea is highly soluble in water. Once dissolved, it is neither acidic nor alkaline.

Urea is actually one of the more well-studied and well-supported ingredients out there if you have eczema.

Clinical trials have shown that urea creams in the 5 - 10% range can:

Higher concentrations (20 -30%) can also help with thickened, scaly patches but is also more likely to sting on active flares.

Skip urea if you have rosacea. The AAD (American Academy of Dermatology) lists it alongside alcohol, menthol, and fragrance as a potential irritant for rosacea-prone skin. Urea's keratolytic and penetration-enhancing properties can trigger stinging, burning, and redness.

As always, your skin is unique, so definitely check in with your dermatologist.

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!

Xanthan 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.

On the technical side of things, xanthan gum is a polysaccharide - a combination consisting of multiple sugar molecules bonded together.

Xanthan 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.

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