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. Stay hydrated!

Learn more about Water

Butylene Glycol

Humectant, Masking, Skin Conditioning

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.

Learn more about Butylene Glycol

Cetearyl Alcohol

Emollient, Emulsifying, Emulsion Stabilising

Cetearyl alcohol is a mixture of two fatty alcohols: cetyl alcohol and stearyl alcohol. It is mainly used as an emulsifier. Emulsifiers help prevent the separation of oils and products. Due to its composition, it can also be used to thicken a product or help create foam.

Cetearyl alcohol is an emollient. Emollients help soothe and hydrate the skin by trapping moisture.

Studies show Cetearyl alcohol is non-toxic and non-irritating. The FDA allows products labeled "alcohol-free" to have fatty alcohols.

This ingredient is usually derived from plant oils such as palm, vegetable, or coconut oils. There is debate on whether this ingredient will cause acne.

Due to the fatty acid base, this ingredient may not be Malassezia folliculitis safe.

Learn more about Cetearyl Alcohol

Caprylic/Capric Triglyceride

Masking, Skin Conditioning

This ingredient is an emollient, solvent, and texture enhancer. It is considered a skin-softener by helping the skin prevent moisture loss.

It helps thicken a product's formula and makes it easier to spread by dissolving clumping compounds.

Caprylic Triglyceride is made by combining glycerin with coconut oil, forming a clear liquid.

While there is an assumption Caprylic Triglyceride can clog pores due to it being derived from coconut oil, there is no research supporting this.

Learn more about Caprylic/Capric Triglyceride

Stearic Acid

Cleansing, Emulsifying, Emulsion Stabilising

Stearic Acid is a fatty acid. It is an emollient, emulsifier, and texture enhancer.

As an emollient, stearic acid helps soften skin. It aids the skin's protective barrier by preventing water loss. It also provides a gentle cleansing effect without stripping away natural oils.

Stearic acid may also be used to enhance the texture of products. It can add volume and stabilize ingredients such as water and oil. This can help water and oil ingredients from separating.

Sources of stearic acid include animal or vegetable fats/oils such as coconut or shea. It can be naturally found in butter, cocoa butter, shea butter, vegetable fats, and animal tallow.

This ingredient may not be Malassezia folliculitis, or fungal-acne safe.

Learn more about Stearic Acid

Arginine

Masking, Skin Conditioning

Arginine is an amino acid that is important for human development. Your body uses is it to produce hair keratin and skin collagen.

As a cosmetic ingredient, Arginine has antioxidant properties and can also help repair damaged skin. This ingredient is derived either synthetically or from animals.

Arginine isn't fungal acne safe when used in the presence of other lipids (fats, fatty acids, oils, esters, etc). Oils and fats occur naturally within the skin, so take caution when using Arginine if you're prone to fungal acne.

Learn more about Arginine

Sodium Hyaluronate

Humectant, Skin Conditioning

Sodium Hyaluronate is hyaluronic acid's salt form. It is commonly derived from the sodium salt of hyaluronic acid.

Like hyaluronic acid, it is great at holding water and acts as a humectant. This makes it a great skin hydrating ingredient.

Sodium Hyaluronate is naturally occurring in our bodies and is mostly found in eye fluid and joints.

These are some other common types of Hyaluronic Acid:

Learn more about Sodium Hyaluronate

Adenosine

Skin Conditioning

Adenosine is in every living organism. It is one of four components in nucleic acids that helps store our DNA.

Adenosine has many benefits when used. These benefits include hydrating the skin, smoothing skin, and reducing wrinkles. Once applied, adenosine increases collagen production. It also helps with improving firmness and tissue repair.

Studies have found adenosine may also help with wound healing.

In skincare products, Adenosine is usually derived from yeast.

Learn more about Adenosine

Carbomer

Emulsion Stabilising, Gel Forming

Carbomer is a polymer of acrylic acid. Its main role is to create a gel consistency.

A high amount of carbomer can cause pilling or balling up of products. Don't worry, most products contain 1% or less of carbomer.

Ingredient Ratings

Here's what our community thinks of the ingredients in these products.

Peptide Pro Firming Moisturizer

Advanced Snail 92 All In One Cream

When to use

Peach & Lily Peptide Pro Firming Moisturizer 67 ingredients

COSRX Advanced Snail 92 All In One Cream 22 ingredients

81 Routines

40% use in am

60% use in pm

95% use every day

When to use See routines that use it ->

1,961 Routines

46% use in am

53% use in pm

95% use every day

When to use See routines that use it ->

Reviews

Here's what our community thinks

Peach & Lily Peptide Pro Firming Moisturizer 67 ingredients

2.7 /5

from 3 ratings

Absorbs Well (1) Broke Me Out (1) Hydrating (1)

AliSia_61108

1 year ago

Review

Pros
- Great texture. Glides like cushion-y silk and leaves an occlusive layer.
- A solid night cream with glass skin results.
- Smells like fruit loops.

Cons
- Hard to incorporate into some routines because of many interactions with other ingredients.
- Small breakouts (white heads) next day, ever time I used it. My skin never ended up tolerating it.

Overall: Recommend, just not Show more

#hydrating

#broke me out

#oily

#light scent

Peach & Lily

Peptide Pro Firming Moisturizer

Emily Holloway

3 months ago

Review

Wanted to love this so badly. It absorbs well overnight and has a lovely fruit smell. However, something in it caused me to break out in hives. My skin is pretty sensitive to begin with, so it could be a reaction to a number of ingredients in this product. Terribly sad it gave me a reaction because I liked the feel and smell.

#irritating

#absorbs well

#strong scent

Peach & Lily

Peptide Pro Firming Moisturizer

COSRX Advanced Snail 92 All In One Cream 22 ingredients

2.7 /5

from 45 ratings

Sticky (29) No Scent (24) Light (16)

Shane Jordan

7 months ago

Review

6-Month Update: Honestly, I may have spoken too soon—I actually like the CosRX Snail Mucin All-in-One Cream! I had to accept that not every product is meant for daily use, and I find myself reaching for this more in warm weather. It layers well under sunscreen and is perfect for days when I want something lighter. I love the way it feels, and since I’m just about done with my original jar, a Show more

#great value

#light

#absorbs well

#no scent

COSRX

Advanced Snail 92 All In One Cream

Min

10 months ago

Review

like thicker snail mucin, personally it works great for me especially in the summer. i have dry sensitive skin so this has helped with my barrier. i don't use this as my last step (only on exfoliation day tho) and usually put my sunscreen overtop or use it with the sandwich method for my retinol

#light

#sticky

#no scent

#works well

COSRX

Advanced Snail 92 All In One Cream