Cos De BAHA

Cos De BAHA Azelaic Acid Serum.

Serums

About this product

A topical azelaic acid treatment designed for acne, rosacea, and hyperpigmentation, available over the counter.

Full ingredients

Aloe Barbadensis Leaf Extract, Propylene Glycol, Azelaic Acid 10.0%, Polysorbate 20, 1,2-Hexanediol, Propanediol, Panthenol, Niacinamide, Sodium Hyaluronate 0.2%, Hamamelis Virginiana (Witch Hazel) Leaf Extract, Rosmarinus Officinalis (Rosemary) Extract, Eucalyptus Globulus Leaf Extract, Thymus Vulgaris (Thyme) Extract, Aspalathus Linearis Extract

Guru Score

73%

Mixed

Early verdict · Few reviews so far

What the gurus are saying

This azelaic acid hits the 10% ceiling for over-the-counter products, potent but below the 15%+ strengths dermatologists prescribe in clinic. It requires an adjustment period, but reviewers who pushed through found it worth repurchasing for the price.

Synthesized from 2 expert reviews · most recent take November 2024

What they liked

Repurchase-worthy once skin adjusts

What they flagged

Requires an adjustment period

Best for

Sensitive skin Acne-prone skin

Type

SerumsDrops & dropper

Key actives

Niacinamide Hyaluronic acid Azelaic acid

Formula notes

Fragrance-freeNo drying alcohol

Where to buy

Amazon → Google →

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What the gurus are saying.

Every take we've logged from this product's reviews across YouTube. Click any row to watch the moment they said it.

All takes Yay takes Nay takes Mixed takes Hide sponsored

Dr. Daniel Sugai

722k subs

~Mixed

"I've talked about CA deaja that's a K Beauty brand with aoic acid up to 10% 15% and up I prescribe in clinic but 10% the max you find over the counter"

AliceintheRabbitHole

59k subs

~Yay

"I was not a big fan of azelaic acid initially, but I figured out that the trick is you have to use it often, so I started stocking up on the Cos De BAHA azelaic acid serums. [...] I have two backups of this product. It does tend to separate, you can see the powder all over it, and it really does get messy and spill everywhere, but I can put up with that."

All 2 takes from AliceintheRabbitHole

Skincare Empties: the Sunscreen Edition!

How I Save Money on Skincare: the PRODUCTS vs the INGREDIENTS I need

"With azelaic acid I've got Peach Slices and Cos De BAHA. The Cos De BAHA was a little harder for me to adjust to, but now that I've adjusted, this is the product I most recently repurchased, and [...] it costs less, I like saving money."

What the evidence says.

Independent of what the gurus think, this is what the published research supports about the main active ingredients here.

Niacinamide

Niacinamide has evidence behind it for redness, uneven tone and supporting the skin barrier, and it is usually well tolerated even by skin that reacts to most things.

Source: DermNet

Azelaic acid

Azelaic acid has clinical evidence for both acne and rosacea, and it is one of the gentler options for calming redness while also working on marks left behind.

Source: DermNet

Humectants and emollients

Ingredients like these draw water into the surface layers and slow how fast it leaves. The evidence is for comfort, softness and hydration rather than for changing the structure of the skin.

Source: DermNet

Frequently asked.

What is Cos De BAHA Azelaic Acid Serum?

A topical azelaic acid treatment designed for acne, rosacea, and hyperpigmentation, available over the counter.

Is Cos De BAHA Azelaic Acid Serum worth it?

The gurus mostly approve it, but with enough reservations to keep it in the middle at a Guru Score of 73%.

What is Cos De BAHA Azelaic Acid Serum's Guru Score?

Cos De BAHA Azelaic Acid Serum holds a Guru Score of 73%. That is our read on how warmly the experts talk about it, based on the verdicts of 2 expert reviewers we have collected.