Cos De BAHA

Cos De BAHA A5 Azelaic Acid 5% Serum

Name: Cos De BAHA - A5 Azelaic Acid 5% Serum
Brand: Cos De BAHA

Efficacy100/100IrritancyLow

See all ingredients

Works for

Evens skin tone

Azelaic acid, Niacinamide + 1 more

Works well

What the product description says

“Infused with Niacinamide to help reduce dark spots and promote a brighter-looking skin.”

Source: Lila Beauty

This product can help reduce hypepigmentation and even out the skin tone because it contains the following effective ingredients: azelaic acid, niacinamide

Keep in mind that you would need to apply any topical skincare targetted at hypigmentation consistently for a couple of months to get a result. No topical skincare product can help get rid of hyperpigmentation (including post-acne marks and age spots) instantly.

Azelaic acidKey activeEffect: HighIs produced by a yeast that lives on normal human skin. It is used in medicine as a topical treatment for mild to moderate acne. It has a mild exfoliating effect. It can also help reduce hyperpigmentation, helps calm down inflammation and can help neutralize free radicals~4.5–6.7%

NiacinamideKey activeEffect: HighIs proven to be effective in reducing blemishes, evening out skin tone and helping to improve lines and wrinkles. It helps the skin to repair sun damage, calm down inflammation and keep maintain good levels of moisture. The concentration of about 2% is effective for supporting the skin barrier and evening out the skin tone. Concentration of 4-6% is better for helping with acne and balancing the sebum production~3.5–5.3%

Camellia sinensis leaf extractEffect: Low, below effective doseCan contain potent anti-oxidant compounds (abbreviated ECG, GCG, EGC, and EGCG) that might help protect the skin from free radicals. Can help calm down inflammation and has some anti-bacterial properties. Unfortunately, these antioxidants are unstable and lose their effectiveness very quickly in products. The concentration of the antioxidant compounds in the extract also tends to be low to be effective in topical formulation~0.2–0.75%

Anti-blemish

Azelaic acid, Niacinamide + 1 more

Works well

What the product description says

“DESCRIPTION Cos De BAHA A5 Azelaic Acid 5% Serum 30ml reduces the look of blemishes and acne, fades brown spots and marks from previous acne breakouts.”

Source: Lila Beauty

This product can help reduce breakouts and clogged pores because it contains the following ingredient: azelaic acid, niacinamide. These ingredients is used for treating acne and can have a noticeable effect.

Azelaic acidHeroEffect: HighIs produced by a yeast that lives on normal human skin. It is used in medicine as a topical treatment for mild to moderate acne. It has a mild exfoliating effect. It can also help reduce hyperpigmentation, helps calm down inflammation and can help neutralize free radicals~4.5–6.7%

NiacinamideHeroEffect: HighIs proven to be effective in reducing blemishes, evening out skin tone and helping to improve lines and wrinkles. It helps the skin to repair sun damage, calm down inflammation and keep maintain good levels of moisture. The concentration of about 2% is effective for supporting the skin barrier and evening out the skin tone. Concentration of 4-6% is better for helping with acne and balancing the sebum production~3.5–5.3%

Anti-oxidation

Side benefit · Azelaic acid, Sambucus nigra flower extract + 1 more

Works well

This product contains antioxidants (azelaic acid) that can help neutralize free radicals in skin. By doing so, they can lessen the damage the skin gets from the UV light (sun).

Sambucus nigra flower extractEffect: LowA plant extract that might help neutralize free radicals in skin~0.05–0.3%

Camellia sinensis leaf extractUnder-dosedCan contain potent anti-oxidant compounds (abbreviated ECG, GCG, EGC, and EGCG) that might help protect the skin from free radicals. Can help calm down inflammation and has some anti-bacterial properties. Unfortunately, these antioxidants are unstable and lose their effectiveness very quickly in products. The concentration of the antioxidant compounds in the extract also tends to be low to be effective in topical formulation~0.2–0.75%

Anti-aging

Side benefit · Niacinamide, Camellia sinensis leaf extract

Works well

This product can help reduce and prevent fine lines and wrinkles, improve skin elasticity and firmness because it contains niacinamide.

Keep in mind that it typically takes at least 6 weeks to notice any results because the changes that are needed to improve fine lines and elasticity happen in the deeper layers of the skin. No topical anti-aging product can “erase” wrinkles or fully reverse signs of aging.

Moisturizing

Side benefit · Niacinamide, Panthenol + 4 more

Works well

This product contains good ingredients to attract water to the upper layer of the skin. These ingredients are called "humectants": sodium hyaluronate, aloe barbadensis leaf extract.

When humectants are on the surface of the skin, they “pull in” the moisture from the outside environment, or from within deeper layers of the skin. If the air is dry, humectants can speed up the moisture loss from the skin. This is why it is a good idea to use another product on top of this one to help "seal in" the moisture (look for ingredients like dimethicone, squalane, oils and butters).

The following ingredients in this product are especially good for supporting the skin barrier and helping with the hydration level: niacinamide, panthenol

PanthenolHero· HumectantEffect: HighHelps attract water to the upper layer of the skin and can help improve skin barrier function~0.9–1.35%

Sodium hyaluronateKey active· HumectantEffect: HighOne of the best moisturizing ingredients. Attracts water into the upper layer of the skin~1.8–2.7%

Aloe barbadensis leaf extract· Humectant, EmollientEffect: LowTraditionally used to treat sunburns, dermatitis and inflammation, but evidence for its effectiveness is lacking. The extract can contain humectants that help attract water into the skin~23–34%

Propylene glycol· HumectantEffect: LowHelps oil and water mix together and can enhance the penetration of other ingredients into the skin. It can be irritating~4.2–6.3%

Can it cause trouble?

Irritancy

5 flagged ingredients

Low risk

We flag 5 ingredients with irritancy potential; the product's overall irritancy is low. The table lists each ingredient's own rating.

IngredientFunctionIrritationEst. amount

Propylene glycolHelps oil and water mix together and can enhance the penetration of other ingredients into the skin. It can be irritatingHigh~4.2–6.3%est.

Sambucus nigra flower extractA plant extract that might help neutralize free radicals in skinHigh~0.05–0.3%est.

Aloe barbadensis leaf extractTraditionally used to treat sunburns, dermatitis and inflammation, but evidence for its effectiveness is lacking. The extract can contain humectants that help attract water into the skinMedium~23–34%est.

1,2-hexanediolA preservativeMedium~0.5–1.15%est.

Sodium citrateHelps to control the skin's pH level. Maintains the skin's natural film of amino-lactic acids and oils. Helps to preserve productsMedium~1.1–1.7%est.

Comedogenic

Clean of flagged comedogenic ingredients

None flagged

Alternatives

Cheaper, or higher on efficacy

Maruderm %10 Azelaik Asit Solüsyon Serum – Leke ve Kızarıklık Karşıtı Cilt Bakım Serumu

Cheaper89% match

$6.43

HELP Anti Dark Spot Serum

Cheaper63% match

$7.26

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Ingredients

Filter by role to see what each ingredient is doing.

Aloe barbadensis leaf extract~23–34%

Irritant · medium

Irritation risk: Medium

Works for

Moisturizing

Traditionally used to treat sunburns, dermatitis and inflammation, but evidence for its effectiveness is lacking. The extract can contain humectants that help attract water into the skin

More about Aloe barbadensis leaf extract

Propylene glycol~4.2–6.3%

Irritant · high

Irritation risk: High

Works for

Moisturizing

Helps oil and water mix together and can enhance the penetration of other ingredients into the skin. It can be irritating

More about Propylene glycol

Azelaic acid~4.5–6.7%

Hero · Anti-blemish

Irritation risk: Low

Works for

Anti-blemishAnti-oxidationEvens skin toneExfoliation

Is produced by a yeast that lives on normal human skin. It is used in medicine as a topical treatment for mild to moderate acne. It has a mild exfoliating effect. It can also help reduce hyperpigmentation, helps calm down inflammation and can help neutralize free radicals

More about Azelaic acid

Niacinamide~3.5–5.3%

Hero · Moisturizing, Anti-blemish

Irritation risk: Low

Works for

Evens skin toneAnti-agingMoisturizingAnti-blemishReduces irritationAntibacterialAnti-inflammatoryReduces redness

Is proven to be effective in reducing blemishes, evening out skin tone and helping to improve lines and wrinkles. It helps the skin to repair sun damage, calm down inflammation and keep maintain good levels of moisture. The concentration of about 2% is effective for supporting the skin barrier and evening out the skin tone. Concentration of 4-6% is better for helping with acne and balancing the sebum production

More about Niacinamide

1,2-hexanediol~0.5–1.15%

Irritant · medium

Irritation risk: Medium

A preservative

More about 1,2-hexanediol

Sodium hyaluronate~1.8–2.7%

Key active

Irritation risk: Low

Works for

Moisturizing

One of the best moisturizing ingredients. Attracts water into the upper layer of the skin

More about Sodium hyaluronate

Sodium citrate~1.1–1.7%

Irritant · medium

Irritation risk: Medium

Helps to control the skin's pH level. Maintains the skin's natural film of amino-lactic acids and oils. Helps to preserve products

More about Sodium citrate

Panthenol~0.9–1.35%

Hero · Moisturizing

Irritation risk: Low

Works for

Reduces rednessMoisturizingReduces irritation

Helps attract water to the upper layer of the skin and can help improve skin barrier function

More about Panthenol

Propanediol~0.5–1.2%

Formula

Irritation risk: Low

Acts as a solvent for other ingredients. Speeds up the absorption of other ingredients into the skin

More about Propanediol

Polysorbate 20~0.4–0.9%

Formula

Irritation risk: Low

Works for

Cleansing

Helps oil and water mix together

More about Polysorbate 20

Camellia sinensis leaf extract~0.2–0.75%

Under-dosed

Irritation risk: Low

Works for

AntibacterialAnti-oxidationAnti-agingAnti-blemishEvens skin toneMoisturizing

Can contain potent anti-oxidant compounds (abbreviated ECG, GCG, EGC, and EGCG) that might help protect the skin from free radicals. Can help calm down inflammation and has some anti-bacterial properties. Unfortunately, these antioxidants are unstable and lose their effectiveness very quickly in products. The concentration of the antioxidant compounds in the extract also tends to be low to be effective in topical formulation

More about Camellia sinensis leaf extract

Leontopodium alpinum extract~0.1–0.45%

Formula

Irritation risk: Low

More about Leontopodium alpinum extract

Momordica charantia fruit extract~0.1–0.35%

Formula

Irritation risk: Low

More about Momordica charantia fruit extract

Sambucus nigra flower extract~0.05–0.3%

Irritant · high

Irritation risk: High

Works for

Anti-inflammatoryAnti-oxidation

A plant extract that might help neutralize free radicals in skin

More about Sambucus nigra flower extract

Ingredient list view

Aloe barbadensis leaf extract, Propylene glycol, Azelaic acid, Niacinamide, 1,2-hexanediol, Sodium hyaluronate, Sodium citrate, Panthenol, Propanediol, Polysorbate 20, Camellia sinensis leaf extract, Leontopodium alpinum extract, Momordica charantia fruit extract, Sambucus nigra flower extract

Compare prices

Retailers ranked by price — lowest first.

🇦🇺 Lila Beauty (AU)30 ml

≈ $8.94

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🇦🇺 Amazon Australia (AU)Price as of 11/4 12:01 GMT

≈ $12.56

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Worth comparing, line by line.

Match % combines shared ingredients, the first five ingredients, shared actives and hero ingredients, irritancy (lower counts in the alternative's favour), texture and body area. Only products in the same routine step are compared.

Side-by-side comparison of this product against its closest alternatives
	Cos De BAHAA5 Azelaic Acid 5% SerumYOUR PRODUCT	Maruderm%10 Azelaik Asit Solüsyon Serum – Leke ve Kızarıklık Karşıtı Cilt Bakım Serumu	NINE LESSA-Control 10% Azelaic Acid Serum NEW FORMULA	MaryenBAnc10 Azelaic Acid Serums
Match	—	89%	88%	83%
Price	—	$6.43	$13.05	—
Shared key ingredients	—	4 of 6	4 of 6	5 of 6
Key difference	—	Aspartic Acid	Hydrolyzed Hyaluronic Acid	Centella Asiatica Extract
Irritancy	Low	Low	Low	Low
Drying alcohol	—	—	—	—
	View product	Shop	Shop	Shop

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Product summary

"Cos De BAHA - Buy A5 Azelaic Acid 5% Serum in Australia - Korean Online Skincare" is effective for: Evens skin tone, Anti-blemish, Anti-aging and Moisturizing

Ingredient callouts

A good concentration of Niacinamide (3.50% - 5.30%). Niacinamide is a well-studied multi-tasking active. It is stable, and can work well in almost any hydrating formulation. There is solid evidence that Niacinamide can help support skin barrier, regulate oil production and reduce acne and clogged pores. It also helps to fight photodamage and improve the skin tone, reducing pigmentation marks.
Panthenol (pro-vitamin B5) at about 0.90% - 1.35% concentration. In this concentration, Panthenol works effectively to improve the skin barrier and reduce inflammation.
Azelaic Acid (4.50% - 6.70%). This active can reduce hyperpigmentation. It also works helps against acne and clogged pores. Please note that Azelaic Acid is most effective against acne in concentrations between 10% and 20%.
Humectants (panthenol 0.90% - 1.35% and sodium hyaluronate 1.80% - 2.70%). These ingredients help attract water to the upper layer of the skin and improve the skin hydration.