Cos De BAHA Azelaic Acid Hinokitiol Serum — hinokitiol, drawn from cypress, brings an antimicrobial character that azelaic acid on its own does not have. Combining them shifts this serum away from pure redness work and toward active congestion — the blemishes themselves rather than just their aftermath.
Best for
Skin that breaks out repeatedly in the same places, and congestion that has not responded to a BHA alone.
How to use Cos De BAHA Azelaic Acid Hinokitiol Serum
Apply a thin layer at night on clean, dry skin. Begin every other night and build up.
Choosing between the azelaic options
Take this one if breakouts are the main issue. Take the plain 10% serum if redness is. Take the A5 at 5% if your skin is reactive.
What is in it
Azelaic acid
The case for azelaic acid is that it treats the whole life cycle of a blemish rather than one stage of it. It reduces the bacteria involved, calms the inflammation that makes the spot visible, and interrupts the pigment production that leaves a mark for months afterwards. It can tingle for the first week or two. Higher concentrations exist on prescription; cosmetic strengths work more slowly and are far easier to live with. Background reading on azelaic acid if you want the chemistry behind it.
BHA
Salicylic acid is oil-soluble, and that single property is why it is the standard answer for blackheads and congestion. It travels into the pore lining rather than working only across the surface, clearing the mix of sebum and dead cells that blocks it. It is also mildly anti-inflammatory, so it tends to calm the redness around a blemish rather than aggravate it. Most well-judged leave-on products sit around two percent.
What to use it with
Seal this in with a moisturiser and apply it to skin that is still damp from a toner — both steps make a measurable difference to how much of the serum stays where you put it. From the rest of our range, iUNIK Centella Calming Gel Cream and Simple Kind To Skin Soothing Facial Toner are sensible companions, and both are stocked with the same cash-on-delivery terms.
Where it fits in your routine
A serum goes on after cleansing and toning, while skin is still slightly damp, and before anything heavier. That order matters more than people expect — the thinnest, most concentrated layer needs direct contact with skin, not a film of moisturiser in the way. Give it thirty seconds to absorb, then seal it in with a cream. If you are using more than one serum, the lighter one goes first.
Before you start
Exfoliating acids increase sun sensitivity, so daily sunscreen matters more than usual while you are using this. Do not layer it with a retinoid on the same night until you know how your skin handles each on its own.
Common questions
Is Cos De BAHA Azelaic Acid Hinokitiol Serum authentic?
Yes. Euros Belle stocks sealed, unopened units sourced through the brand’s own distribution, and we do not sell testers, decants or refilled packaging. Every order is checked before it leaves us, and you are welcome to inspect the seal at the door before paying.
Can I pay cash on delivery?
Cash on delivery is the only payment method we offer — there is nothing to pay in advance and no card details to enter anywhere. You pay the delivery agent when the parcel reaches you. Inside Dhaka delivery is ৳70 and takes one to two days; outside Dhaka it is ৳130 and takes three to four.
Can I use this with my other products?
Not on the same night as another strong active. Keep retinoids and exfoliating acids on alternate evenings until you know how your skin responds to each. Niacinamide, hyaluronic acid, panthenol and ceramides layer with this without any conflict.
Will it suit my skin type?
Most skin types tolerate it, though anyone with reactive or recently over-exfoliated skin should introduce it slowly. If your barrier is currently compromised — stinging, tightness, unusual redness — repair that first with something simple before adding anything active.
More Serums & Ampoules · Browse all Cos De BAHA products
Reviews
There are no reviews yet.