CeraVe SA Lotion for Rough and Bumpy Skin Versus First Aid Beauty KP Smoothing Body Lotion

CeraVe SA Lotion for Rough and Bumpy Skin Versus First Aid Beauty KP Smoothing Body Lotion

This smoothing moisturizer is formulated around Salicylic Acid and Ceramide NP to refine skin texture and strengthen the skin barrier.

What's inside

Key Ingredients

Benefits

Concerns

Ingredients Side-by-side

Salicylic Acid

Water

Glycerin

Paraffinum Liquidum

Triethanolamine

Glyceryl Stearate

Ammonium Lactate

PEG-100 Stearate

Cetearyl Alcohol

Cetyl Alcohol

Zea Mays Oil

Ceramide NP

Ceramide AP

Ceramide EOP

Carbomer

Behentrimonium Methosulfate

Dimethicone

Methylparaben

Sodium Lauroyl Lactylate

Cholecalciferol

Cholesterol

Disodium EDTA

Propylparaben

Hydrolyzed Hyaluronic Acid

Phytosphingosine

Xanthan Gum

Salicylic Acid, Water, Glycerin, Paraffinum Liquidum, Triethanolamine, Glyceryl Stearate, Ammonium Lactate, PEG-100 Stearate, Cetearyl Alcohol, Cetyl Alcohol, Zea Mays Oil, Ceramide NP, Ceramide AP, Ceramide EOP, Carbomer, Behentrimonium Methosulfate, Dimethicone, Methylparaben, Sodium Lauroyl Lactylate, Cholecalciferol, Cholesterol, Disodium EDTA, Propylparaben, Hydrolyzed Hyaluronic Acid, Phytosphingosine, Xanthan Gum

Lactic Acid

Propanediol

C12-15 Alkyl Benzoate

Caprylic/Capric Triglyceride

Silica

Sodium Hydroxide

Palmitic Acid

Stearic Acid

Glyceryl Stearate Se

Urea

Allantoin

Colloidal Oatmeal

Camellia Sinensis Leaf Extract

Glycyrrhiza Glabra Root Extract

Chrysanthemum Parthenium Extract

Sodium Phytate

Sodium PCA

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

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.

Ceramide NP (formerly known as Ceramide 3) is one of the skin's naturally occurring lipids.

Since ceramides are the major lipid components of the skin, they are crucial for maintaining skin barrier and hydration. Ceramide NP most closely mirrors the dominant kind in human skin amongst ceramide subtypes.

This ceramide works by slotting into gaps within the stratum corneum's lipid matrix to limit trans-epidermal water loss (TEWL) and shield the skin against external irritants.

A study with 312 patients found that using a ceramide-containing routine for 4 weeks reduced the severity of atopic dermatitis by over 61%.

Another clinical study in subjects aged 60 and older found that a ceramide body wash and moisturizer improved skin dryness and itchy skin in 15 days.

Overall, ceramides are considered non-irritating and safety tests have found little to no observable adverse effects from using this ingredient.

Ceramide NP is usually sourced from plants (like soybean or rice bran), or produced synthetically.

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.

Dimethicone is a type of synthetic silicone created from natural materials such as quartz. It is also known as polydimethylsiloxane.

What it does:

Dimethicone comes in different viscosities:

Depending on the viscosity, dimethicone has different properties.

Ingredients lists don't always show which type is used, so we recommend reaching out to the brand if you have questions about the viscosity.

This ingredient is unlikely to cause irritation because it does not get absorbed into skin. However, people with silicone allergies should be careful about using this ingredient.

Note: Dimethicone may contribute to pilling. This is because it is not oil or water soluble, so pilling may occur when layered with products. When mixed with heavy oils in a formula, the outcome is also quite greasy.

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 is made by reacting glycerin with stearic acid (typically sourced from plant oils like palm or coconut). It's an emulsifier, emollient, and mild occlusive.

Emulsifiers help ingredients like oil and water stay mixed so your formula stays nicely blended and uniform in texture.

This ingredient is typically used in concentrations between 1-10%. Studies have found it to be non-sensitizing, non-phototoxic, and non-photoallergenic.

A close cousin of this ingredient is Glyceryl Stearate SE ("self-emulsifying"). This just has a small amount of sodium or potassium stearate added so it can emulsify without a co-emulsifier.

Since this ingredient is an ester of a C18 fatty acid, it may not be fungal acne safe. The Malassezia yeast can potentially metabolize within the C11-C24 range.

Fun fact: The human body also creates Glyceryl Stearate naturally.

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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