Cos De BAHA Serums
Shop Cos De BAHA serums in 22+ live options, including Arbutin Niacinamide, Azelaic Acid 15%, Lactic Acid, Vitamin C 15%, Hyaluronic Acid 1% Solution, Retinol 2.5, and Galactomyces Fermented Filtrate 94%. This collection is best for ingredient-led routines where each serum has a clear job.
By Skinsli editorial Updated
Buying guide
How to choose Cos De BAHA serums
Cos De BAHA serums are ingredient-forward, and this collection currently lists 22+ live options. The visible assortment includes arbutin and niacinamide blends, Azelaic Acid 15% Serum AZ15, LS Lactic Acid Serum, Vitamin C 15% Serum, Hyaluronic Acid 1% Solution Serum in several sizes, RS Retinol 2.5 Serum, and Galactomyces Fermented Filtrate 94% Serum.
Ingredient-first shopping
This is a collection where the ingredient name matters more than the packaging style. Cos De BAHA titles clearly call out actives such as arbutin, niacinamide, azelaic acid, lactic acid, vitamin C, hyaluronic acid, retinol, and galactomyces ferment.
Start by choosing one main goal for your routine. Buying several strong serums at once can make it hard to know which product your skin likes.
Tone and brightening options
Arbutin Niacinamide Serum 30ml and Arbutin 5% plus Niacinamide 5% Serum 30ml are the visible tone-focused options in this grid. They are the most direct choices when you want a serum centered on uneven-looking tone.
Vitamin C 15% Serum 30ml also sits in the brightening family, but vitamin C can feel different from arbutin or niacinamide. If your skin is reactive, introduce one brightening serum at a time.
Texture and clarity options
Azelaic Acid 15% Serum AZ15 and LS Lactic Acid Serum 30ml are stronger active choices in the visible assortment. These are better for shoppers who already understand how their skin responds to acids and targeted treatments.
Do not start both on the same night. Use the product directions, patch test when appropriate, and keep the rest of the routine simple while your skin adjusts.
Hydration options
Hyaluronic Acid 1% Solution Serum appears in 30ml, 60ml, and 240ml sizes. This is the easiest Cos De BAHA serum family to understand if your main concern is hydration support.
The 30ml size is practical for testing, 60ml is a regular routine size, and 240ml is best for shoppers who already use hyaluronic acid often. Apply it to slightly damp skin, then seal with moisturizer.
Retinol and ferment choices
RS Retinol 2.5 Serum 60ml is the retinol listing visible in the live grid. Retinol is usually a night-step product, and it should be introduced slowly with sunscreen used during the day.
Galactomyces Fermented Filtrate 94% Serum 30ml is a different path for shoppers interested in fermented ingredients. It can be easier to pair with a simple hydration routine than with several strong actives.
How to layer these serums
Use one Cos De BAHA serum after cleansing and toner, then follow with moisturizer. If you use a morning active, finish with sunscreen.
When combining products, keep hyaluronic acid as the flexible hydration layer and avoid stacking acid, vitamin C, and retinol products without a clear plan. A slower routine is easier to troubleshoot.
Best first picks
For a first Cos De BAHA serum, choose Hyaluronic Acid 1% Solution if you want hydration, Arbutin Niacinamide if you want a tone-focused serum, or Galactomyces if you want a ferment-focused option. These are easier starting points than jumping straight into several actives.
Choose Azelaic Acid 15%, Lactic Acid, Vitamin C 15%, or Retinol 2.5 when you are ready to manage a more targeted active routine. Introduce each one separately so your skin has time to respond.
FAQ
Frequently asked questions
FAQ
Frequently asked questions
How many Cos De BAHA serums are live in this collection?
This collection currently lists 22+ live Cos De BAHA serum options, including hyaluronic acid, arbutin, niacinamide, azelaic acid, lactic acid, vitamin C, retinol, and galactomyces formulas.
Which Cos De BAHA serum should I choose for hydration?
Choose Hyaluronic Acid 1% Solution Serum if hydration is your main goal. It appears in 30ml, 60ml, and 240ml sizes in the live assortment.
What is Cos De BAHA AZ15 serum?
AZ15 refers to the Cos De BAHA Azelaic Acid 15% Serum listing in this collection. It is a targeted active serum, so introduce it slowly and follow the product directions.
Can I use Cos De BAHA Retinol 2.5 Serum with LS Lactic Acid Serum?
Do not start them together. Both are targeted actives, so introduce one first, use it as directed, and avoid layering multiple strong products if your skin is easily irritated.
Which Cos De BAHA serum targets uneven-looking tone?
Look at Arbutin Niacinamide Serum, Arbutin 5% plus Niacinamide 5% Serum, or Vitamin C 15% Serum. Choose one brightening-focused serum first instead of starting all of them at once.
Which size of Cos De BAHA Hyaluronic Acid 1% Serum should I buy?
Choose 30ml for testing, 60ml for regular use, and 240ml only if you already know you like the formula and use hyaluronic acid often.
Where does Cos De BAHA Galactomyces 94% Serum fit?
Galactomyces Fermented Filtrate 94% Serum is a ferment-focused serum. Use it after toner and before moisturizer, and keep the rest of the routine simple when first testing it.
Can I use more than one Cos De BAHA serum in a routine?
Yes, but add them one at a time. A simple pairing such as hyaluronic acid with one targeted serum is easier to manage than combining several acids, vitamin C, and retinol together.