Cos De BAHA S2 Salicylic Acid 2% Liquid Versus Cos De BAHA Salicylic Acid BHA 4% Serum
Updated on October 23, 2024
Overview
What they are
These products are both cruelty-free and reef safe . They have a total of 10 ingredients in common
Cool Features
They both contain BHA and niacinamide
Suited For
They're both likely to be good for fighting acne, anti aging, brightening skin, sensitive skin, oily skin, reducing pores, scar healing and dark spots
Free From
They both do not contain any harsh alcohols, fragrances, oils, parabens, silicones or sulfates
What's Inside
They both contain common allergens
We independently verify ingredients, and our claims are backed by peer-reviewed research. Spot a product that needs an update? Let us know.
Ingredient Info
Cos De BAHA S2 Salicylic Acid 2% Liquid 11 ingredients
Cos De BAHA Salicylic Acid BHA 4% Serum 13 ingredients
About this product
About this product
At a glance
Click on any of the items below to learn more
Cos De BAHA S2 Salicylic Acid 2% Liquid 11 ingredients
Cos De BAHA Salicylic Acid BHA 4% Serum 13 ingredients
Key Ingredients
Benefits
Concerns
Key Ingredients
Benefits
Concerns
Ingredients Side-by-side
Ingredients Explained
These ingredients are found in both products.
Ingredients higher up in an ingredient list are typically present in a larger amount.
Aloe Barbadensis Leaf Extract is an extract of the leaves of the aloe, Aloe barbadensis, Liliaceae.
You may know Aloe to be a good sunburn reliever and inflammation reducer. This is because it contains many components that are known to help reduce irritation and itchiness. These include vitamins, amino acids, polysaccharides, and more. The high water content of aloe also helps give a cooling effect.
Aloe contains the antioxidants Vitamins A, C, and E. These vitamins neutralize free radicals. Free-radicals are molecules that may damage your skin cells, such as pollution.
The aloe plant is naturally abundant in polysaccharides, a carbohydrate made of sugar molecules. Polysaccharides help hydrate your skin by mimicking your skin's natural carbohydrates.
As it is easily absorbed by the skin, aloe is a great moisturizer. It is both a humectant and emollient. Emollients help trap moisture in your skin, keeping your skin soft. Humectants draw water from the air to your skin.
Other components of aloe include sugars such as monosaccharides and polysaccharides, folic acid, choline, many common minerals such as calcium, fatty acids, amino acids, and Vitamin B12.
Aloe does not protect against UV rays, despite it soothing sunburns.
There are over 420 species of aloe but Aloe Barbadensis is the most commonly used for topical products.
Learn more about Aloe Barbadensis Leaf ExtractPropanediol is an all-star ingredient. It softens, hydrates, and smooths the skin.
It’s often used to:
Propanediol is not likely to cause sensitivity and considered safe to use. It is derived from corn or petroleum with a clear color and no scent.
Learn more about PropanediolSalicylic Acid (also known as beta hydroxy acid or BHA) is one of the most well-known ingredients for treating skin that struggles with blackheads and acne. It helps to exfoliate both the skin's surface and pores, and also acts as an anti-inflammatory agent.
This multitasking property makes it a great ingredient for cleaning out pores, controlling oil production, and reducing inflammation.
Unlike AHAs which are water soluble, Salicylic Acid is oil soluble. This means that it's able to exfoliate the inside of pores and reduce blackheads.
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 a Salicylic Acid into your routine.
In general, Salicylic Acid is a great ingredient for oily acne-prone skin.
While salicylic acid does not increase sun-sensitivity, we still recommend wearing SPF.
If you are looking for the ingredient called BHA or Butylated Hydroxyanisole, click here.
Learn more about Salicylic AcidNiacinamide has emerged as an all-star ingredient due to its many benefits.
It is known to treat acne by reducing inflammation. It also helps fade dark-spots and strengthen the skin by promoting the growth of the ceramide barrier.
Other benefits include smoothing wrinkles and minimizing redness.
The cherry on top? Niacinamide can also help build keratin, a protein that keeps skin firm.
When 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.
Niacinamide can be mixed with other ingredients to boost benefits. For instance, it has shown to be effective when used with copper, folic acid, and zinc to treat acne.
Learn more about Niacinamide1,2-Hexanediol is a synthetic liquid and another multi-functional powerhouse.
It is a:
- Humectant, drawing moisture into the skin
- Emollient, helping to soften skin
- Solvent, dispersing and stabilizing formulas
- Preservative booster, enhancing the antimicrobial activity of other preservatives
Rosa Damascena Extract comes from the Damask rose.
The Damask Roses' petals have been found to help sooth skin. The petals also contain antioxidant compounds.
Rosa Damascena Extract is a tonic. Tonics are used to remove soap residues. They also help moisturize the skin.
Learn more about Rosa Damascena ExtractLavandula Angustifolia Flower Extract comes from the lavender plant. Lavender extract has anti-inflammatory and antioxidant properties.
Many components of lavender flowers are antioxidants, such as ferulic acid, caffeic acid, and several flavonoids.
Traditional Iranian folk medicine uses Lavender extract to help treat inflammation.
Lavender extract may have a scent. It contains linalool, a known allergen. However, lavender extract contains less linalool than lavender essential oil.
Learn more about Lavandula Angustifolia Flower ExtractCamellia Sinensis Leaf Extract is derived from the leaves of the tea plant. Black tea, green tea, and oolong tea are all harvested from this plant.
This ingredient has many skin benefits:
This ingredient contains polyphenols, a strong antioxidant. Antioxidants help fight off molecules that damage skin cells.
On top of that, the antioxidants in green tea neutralize free-radicals from the sun. This gives the skin some extra UV protection, but should not replace sunscreen.
Many components of tea have anti-inflammatory properties.
Polyphenols and L-theanine help soothe the skin and reduce irritation. The caffeine in Camellia Sinensis Leaf Extract helps calm inflamed blood vessels.
Other compounds found in tea include: Vitamin Bs, linoleic acid, magnesium, calcium, iron, and zinc.
Research has shown both drinking Camellia Sinensis Leaf Tea and applying it to the skin can help boost skin elasticity and hydration. Studies also show using tea extract may reduce sebum, or oil, production.
Learn more about Camellia Sinensis Leaf ExtractWe don't have a description for Melissa Officinalis Leaf Extract yet.
Artemisia Vulgaris Extract is more commonly known as the common mugwort. It has strong antioxidant properties and helps soothe irritation.
Antioxidants protect skin from damage and the signs of aging.
This plant contains the compounds saponins, glycosides, flavanoids, protein, triterpenoids.
The common wugwort has been used in traditional Indian, Chinese, and European medicines to treat gastrointestinal diseases.
Learn more about Artemisia Vulgaris ExtractIngredient Ratings
Here's what our community thinks of the ingredients in these products.
When to use
Cos De BAHA S2 Salicylic Acid 2% Liquid 11 ingredients
Cos De BAHA Salicylic Acid BHA 4% Serum 13 ingredients

Reviews
Here's what our community thinks
Cos De BAHA S2 Salicylic Acid 2% Liquid 11 ingredients
I actually love this exfoliating serum for my very oily skin! I use it 3 times a week and only use two baby drops of it that I apply mostly on my T zone. The mornings after I use it, my skin feels lighter and purified. Try not to mix this serum with retinoids or vitamin C, although I mixed it with only derivatives (was told it’d be ok by employees), my skin felt a bit sensitive when I did.
This products exfoliates and reduces my fungal acne overnight. It's affordable too