# Cos De BAHA Hydroquinone Brightening Serum for dry skin

**Lovi Fit: Caution fit for dry skin.**
Dry Skin Fit: Low · Effectiveness: Average · Safety: Concerning.

Page: https://lovi.care/skincare/es/p/cos-de-baha/hydroquinone-brightening-serum/for/dry-skin

The Lovi Fit is the same in every country; only the stores and prices differ, and the ones here are for Spain.

Brand: [Cos De BAHA](https://lovi.care/skincare/es/brands/cos-de-baha)
Category: [Serums and treatments](https://lovi.care/skincare/es/best/serums)

This fit is calculated for the concerns frequently associated with dry skin: flakiness, tightness, dehydration, fine lines, and wrinkles. For scores based on a full skin profile (12D face scan, goals, preferences), use the Lovi app.

A poor match for dry skin; the serums alongside fit it better.

## Why this fit

- Offers moderate brightening for your dry skin due to arbutin and niacinamide, but salicylic acid and lactic acid may cause excessive dryness and irritation, outweighing the hydrating benefits of sodium hyaluronate.
- The presence of hydroquinone and kojic acid contributes to brightening but also increases the potential for irritation on dry skin.

## Fit by skin type

- [Oily skin](https://lovi.care/skincare/es/p/cos-de-baha/hydroquinone-brightening-serum/for/oily-skin): Average
- [Dry skin](https://lovi.care/skincare/es/p/cos-de-baha/hydroquinone-brightening-serum/for/dry-skin): Caution (this page)
- [Combination skin](https://lovi.care/skincare/es/p/cos-de-baha/hydroquinone-brightening-serum/for/combination-skin): Average
- [Sensitive skin](https://lovi.care/skincare/es/p/cos-de-baha/hydroquinone-brightening-serum/for/sensitive-skin): Low
- [Acne-prone skin](https://lovi.care/skincare/es/p/cos-de-baha/hydroquinone-brightening-serum/for/acne-prone-skin): Average
- [Skin with dark spots](https://lovi.care/skincare/es/p/cos-de-baha/hydroquinone-brightening-serum/for/dark-spots): Low
- [Mature skin](https://lovi.care/skincare/es/p/cos-de-baha/hydroquinone-brightening-serum/for/mature-skin): Low
- [Dry sensitive skin](https://lovi.care/skincare/es/p/cos-de-baha/hydroquinone-brightening-serum/for/dry-sensitive-skin): Warning
- [Oily acne-prone skin](https://lovi.care/skincare/es/p/cos-de-baha/hydroquinone-brightening-serum/for/oily-acne-prone-skin): Average

## Key ingredients

Hydroquinone, Arbutin, Niacinamide, Kojic Acid, Salicylic Acid

## What the research says

- Niacinamide significantly decreased hyperpigmentation and increased skin lightness compared with vehicle alone after 4 weeks of use in women by inhibiting melanosome transfer. ([The British Journal of Dermatology, 2002](https://pubmed.ncbi.nlm.nih.gov/12100180/))
- Topical post-laser application of human adipocyte-derived mesenchymal stem cell media combined with niacinamide significantly improved wrinkle index, melanin index, patient satisfaction, and investigator esthetic improvement scores compared to vehicle cream in patients with aging skin. ([Journal of Cosmetic Dermatology, 2021](https://pubmed.ncbi.nlm.nih.gov/33103316/))
- TFC-1067 and 2% hydroquinone both significantly lightened facial dyschromia after 8 and 12 weeks in 48 healthy female subjects, but only hydroquinone also lightened normal skin. ([Journal of Cosmetic Dermatology, 2020](https://pubmed.ncbi.nlm.nih.gov/33098161/))
- A non-hydroquinone topical formulation (SKNB19) improved hyperpigmentation by 28.5% in patient self-assessment and 27% in independent reviewer assessment compared with 4% hydroquinone in 18 adult subjects, while showing significantly less irritation and better tolerability. ([Journal of Cosmetic Science, 2020](https://pubmed.ncbi.nlm.nih.gov/33022197/))
- Encapsulation of alpha arbutin in an optimized ethosomal gel significantly improved skin melanin reduction, moisture content, and elasticity in human volunteers compared to conventional formulations. ([Heliyon, 2023](https://pubmed.ncbi.nlm.nih.gov/37681127/))
- Combining a home-based radiofrequency device and arbutin cream reduced mMASI scores by 25.6% and melanin index by 22.8% at 8 weeks compared to baseline in 38 participants. ([Journal of Cosmetic Dermatology, 2025](https://pubmed.ncbi.nlm.nih.gov/39918262/))
- Topical nicotinamide prevented solar-simulated UV-induced immunosuppression in healthy volunteers, and men experienced immunosuppression at solar-simulated UV doses three times lower than those required for women. ([The Journal of Investigative Dermatology, 2008](https://pubmed.ncbi.nlm.nih.gov/17882270/))
- Topical 5% niacinamide applied twice daily for 12 weeks reduced fine lines and wrinkles, hyperpigmented spots, red blotchiness, and skin sallowness, and improved skin elasticity compared to vehicle control in 50 female white subjects with facial photoaging. ([Dermatologic Surgery, 2005](https://pubmed.ncbi.nlm.nih.gov/16029679/))
- Topical 2% niacinamide significantly decreased sebum excretion rate in Japanese individuals and casual sebum levels in Caucasian individuals compared to placebo or baseline. ([Journal of Cosmetic and Laser Therapy, 2006](https://pubmed.ncbi.nlm.nih.gov/16766489/))
- A topical formulation containing kojic acid, emblica extract, and glycolic acid demonstrated efficacy parity compared with hydroquinone 4% in multiethnic participants with mild to moderate facial dyschromia. ([Cutis, 2010](https://pubmed.ncbi.nlm.nih.gov/21049734/))
- A nanoemulsion containing 1 mg/mL kojic dipalmitate and 5% rosehip oil demonstrated high incorporation efficiency, suitable physicochemical stability, antioxidant and depigmenting efficacy close to 1 mM ascorbic acid, and no cytotoxicity at concentrations from 0.06% to 1% in vitro. ([Pharmaceutics, 2023](https://pubmed.ncbi.nlm.nih.gov/36839792/))
- Topical application of iron chelators kojic acid and deferiprone significantly accelerated wound healing in rats compared to control groups, with deferiprone showing superior efficacy due to higher antioxidant and iron chelation abilities. ([International Wound Journal, 2013](https://pubmed.ncbi.nlm.nih.gov/22621771/))
- Cryotherapy with liquid nitrogen achieved a higher cure rate (39%) than salicylic acid (24%) and a wait-and-see approach (16%) for cutaneous warts at 13 weeks in primary care patients. ([CMAJ, 2010](https://pubmed.ncbi.nlm.nih.gov/20837684/))
- A moisturizer containing licochalcone A, 1,2-decanediol, L-carnitine, and salicylic acid significantly reduced noninflammatory, inflammatory, and total acne lesion counts compared to a vehicle control in Thai patients during a 12-week maintenance phase. ([BioMed Research International, 2020](https://pubmed.ncbi.nlm.nih.gov/33150170/))
- Treatment with 2% supramolecular salicylic acid hydrogel resulted in a regression and markedly improvement rate of 51.01% compared to 43.10% for Adapaline gel in patients with mild to moderate facial acne vulgaris, showing no significant difference in efficacy. ([Journal of Cosmetic Dermatology, 2024](https://pubmed.ncbi.nlm.nih.gov/38590107/))

## What reviewers say

This serum is highly effective for hyperpigmentation and dark spots, with many users reporting visible improvements in skin tone and clarity. While generally well-tolerated, some users note that the product can oxidize and that clear instructions for use are sometimes lacking. A significant number of reviews also mention that the price is affordable and the formula is gentle.

- Liked: Fades dark spots (mostly mentioned)
- Liked: Visible results (often mentioned)
- Liked: Affordable price (sometimes noted)
- Liked: Gentle formula (sometimes noted)
- Disliked: Product oxidation (sometimes noted)
- Disliked: Lack of instructions (rarely noted)
- Disliked: Slow/No results (rarely noted)

## How to apply

- Apply this serum PM, starting 3×/week and working up to daily use as your skin adjusts.
- Place the serum after cleansing and toner, but right before your moisturizer.
- Gently press 2-3 drops of the serum into your skin and let it absorb for a minute.
- Apply the serum on slightly damp skin to help lock in extra moisture.
- Avoid the eye area and do a patch test before your first use.
- Video: https://storage.pora.ai/c879dda8655a61c19d3d8c9ebad6b06d.mp4

## Questions and answers

### Why does Lovi advise caution with Cos De BAHA Hydroquinone Brightening Serum for dry skin?

Lovi advises caution because exfoliating acids like salicylic and lactic acid in this treatment may cause excessive dryness and irritation on dry skin, outweighing the hydrating benefits. A treatment for dry skin needs to be exceptionally suitable with soothing ingredients that provide significant hydration, support the skin barrier, and nourish without any risk of irritation.
Sources: [The British Journal of Dermatology, 2002](https://pubmed.ncbi.nlm.nih.gov/12100180/)

### Which ingredients make this serum a poor fit for dry skin?

Salicylic acid, lactic acid, hydroquinone, and kojic acid make this serum a poor fit because they may cause excessive dryness and irritation on dry skin. To fit dry skin well, a treatment like this needs soothing, highly effective hydrating ingredients and skin barrier support like propolis, ceramides, or peptides without any risk of irritation.

### What does Hydroquinone do for dry skin?

Hydroquinone is a strong skin-lightening ingredient and does not add moisture or target dryness. Because it may cause irritation, dry skin needs extra soothing hydrators and gentle barrier-repairing ingredients to stay calm and comfortable.

### What does Arbutin do for dry skin?

Arbutin is primarily used to fade dark spots and even out skin tone rather than hydrate dry skin, so it does not directly add moisture. To properly care for dry skin, a product of this type needs added soothing and moisturizing ingredients like hyaluronic acid, glycerin, or ceramides to keep the skin soft and comfortable.

### Where does this serum go in a skincare routine for dry skin?

This treatment goes in the evening routine after cleansing and before moisturizing, but it is a poor match for dry skin because exfoliating acids and brightening ingredients may cause excessive dryness and irritation. A product of this type for dry skin needs gentle brightening ingredients combined with rich hydrating and soothing components to keep the skin comfortable.

### Can I use this serum with retinol, and in what order?

You should avoid using this treatment and retinol together because their combination may cause excessive dryness and irritation on dry skin. To safely address dark spots while using retinol, dry skin needs products featuring gentle brighteners paired with rich, soothing hydrators.

### How often should I use this serum?

Use this serum in your evening routine, starting just once a week to see how your skin reacts. Because it contains strong active ingredients that may cause excessive dryness and irritation on dry skin, a product of this type needs gentle hydrating ingredients and soothing agents to keep your skin calm and comfortable.

### Can this serum clog pores, cause breakouts or purging for dry skin?

This serum is unlikely to clog pores or cause breakouts on dry skin, though its strong exfoliating ingredients may lead to flaking and irritation. A product for this skin needs gentle hydrators like glycerin and soothing plant oils instead.

### Is this serum fragrance-free and alcohol-free?

Yes, it has no fragrance and no drying alcohol.

## Alternatives for dry skin

- [Paula's Choice RESIST Super Antioxidant Concentrate Serum](https://lovi.care/skincare/es/p/paula-s-choice/resist-super-antioxidant-concentrate-serum/for/dry-skin) — Superior fit — €57.00 at Amazon
- [ma:nyo Bifida Biome Complex Ampoule](https://lovi.care/skincare/es/p/ma-nyo/bifida-biome-complex-ampoule/for/dry-skin) — Superior fit — €18.50 at Amazon
- [Augustinus Bader The Serum](https://lovi.care/skincare/es/p/augustinus-bader/the-serum/for/dry-skin) — Superior fit — €333.00 at Amazon

## Routine for dry skin

### AM

- Cleanser: [CeraVe Hydrating Cleanser](https://lovi.care/skincare/es/p/cerave/hydrating-facial-cleanser/for/dry-skin) — Superior fit — €8.85 at Amazon
- Hydrating Toner: [Paula's Choice Resist Advanced Replenishing Toner](https://lovi.care/skincare/es/p/paula-s-choice/advanced-replenishing-toner/for/dry-skin) — Superior fit — €34.00 at Amazon
- Moisturizer: [d'Alba First Spray Serum](https://lovi.care/skincare/es/p/d-alba/first-spray-serum/for/dry-skin) — Superior fit — €16.99 at Amazon
- SPF: [Purito Daily Soft Touch Sunscreen](https://lovi.care/skincare/es/p/purito/daily-soft-touch-sunscreen/for/dry-skin) — Superior fit — €12.98 at Amazon

### PM

- Pre-Cleanser: [MISSHA Ultra Hyalon Cleansing Cream](https://lovi.care/skincare/es/p/missha/ultra-hyalon-cleansing-cream/for/dry-skin) — Superior fit — €10.97 at Amazon
- Cleanser: [CeraVe Hydrating Cleanser](https://lovi.care/skincare/es/p/cerave/hydrating-facial-cleanser/for/dry-skin) — Superior fit — €8.85 at Amazon
- Serum or Treatment: [SKIN1004 Madagascar Centella Poremizing Fresh Ampoule](https://lovi.care/skincare/es/p/skin1004/madagascar-centella-poremizing-fresh-ampoule/for/dry-skin) — Superior fit — €14.98 at Amazon
- Moisturizer: [d'Alba First Spray Serum](https://lovi.care/skincare/es/p/d-alba/first-spray-serum/for/dry-skin) — Superior fit — €16.99 at Amazon

### Weekly

- Pre-Cleanser: [MISSHA Ultra Hyalon Cleansing Cream](https://lovi.care/skincare/es/p/missha/ultra-hyalon-cleansing-cream/for/dry-skin) — Superior fit — €10.97 at Amazon
- Cleanser: [CeraVe Hydrating Cleanser](https://lovi.care/skincare/es/p/cerave/hydrating-facial-cleanser/for/dry-skin) — Superior fit — €8.85 at Amazon
- Nourishing Mask: [Abib Rice Probiotics Overnight Mask](https://lovi.care/skincare/es/p/abib/rice-probiotics-overnight-mask/for/dry-skin) — Superior fit — €15.30 at Amazon
- Serum or Treatment: [SKIN1004 Madagascar Centella Poremizing Fresh Ampoule](https://lovi.care/skincare/es/p/skin1004/madagascar-centella-poremizing-fresh-ampoule/for/dry-skin) — Superior fit — €14.98 at Amazon
- Moisturizer: [d'Alba First Spray Serum](https://lovi.care/skincare/es/p/d-alba/first-spray-serum/for/dry-skin) — Superior fit — €16.99 at Amazon

## Where to buy

No store in Spain has a checked price for this product, so the page shows none.

## Ingredients

Aloe Barbadensis Leaf Extract, Propanediol, Arbutin, Niacinamide, 1,2-Hexanediol, Hydroquinone, Citric Acid, Sodium Citrate, Sodium Hyaluronate, Salicylic Acid, Kojic Acid, Lactic Acid, Disodium Edta
## About the Lovi Fit

Lovi: Unbiased, science-based skincare AI trained on real user outcomes.

Lovi calculates every fit score from the full ingredient list with brand-independent rules its dermatologists and cosmetic chemists build and review, and personalizes every pick with AI trained on the real results of millions of users. Lovi trains its fit score models on a proprietary dataset built from more than 10,000 expert-labeled products and more than 100,000 simulated examples, following an internally consistent methodology presented at Cosmoprof, AMWC, and Skin of Color Update. Levels from best to worst: Superior, High, Average, Low, Caution, Warning.

Behind this fit score: Nadia Kapleva, MS (Co-founder, Medical Director); Alexey Shagraev, PhD (Co-founder, CEO and CTO); Dr. Sofía Perea Pérez, MD, MSc (Medical Board); Aishani Shah, MD (Medical Board); Asya Zubkova, MS (Medical Board); Hanna Kurets, MD (Medical Board, Medical Advisor); Elina Nazarenko, MD (Medical Board); Victoria Derkova, MS (Medical Board).

Page built Nov 8, 2026.

More from Lovi: https://lovi.care/skincare/llms.txt

## This page in other countries

- United States: https://lovi.care/skincare/p/cos-de-baha/hydroquinone-brightening-serum/for/dry-skin
- United Kingdom: https://lovi.care/skincare/uk/p/cos-de-baha/hydroquinone-brightening-serum/for/dry-skin
- Ireland: https://lovi.care/skincare/ie/p/cos-de-baha/hydroquinone-brightening-serum/for/dry-skin
- Germany: https://lovi.care/skincare/de/p/cos-de-baha/hydroquinone-brightening-serum/for/dry-skin
- France: https://lovi.care/skincare/fr/p/cos-de-baha/hydroquinone-brightening-serum/for/dry-skin
- Italy: https://lovi.care/skincare/it/p/cos-de-baha/hydroquinone-brightening-serum/for/dry-skin
- Netherlands: https://lovi.care/skincare/nl/p/cos-de-baha/hydroquinone-brightening-serum/for/dry-skin
- Spain: https://lovi.care/skincare/es/p/cos-de-baha/hydroquinone-brightening-serum/for/dry-skin (this page)
- Canada: https://lovi.care/skincare/ca/p/cos-de-baha/hydroquinone-brightening-serum/for/dry-skin
- Australia: https://lovi.care/skincare/au/p/cos-de-baha/hydroquinone-brightening-serum/for/dry-skin
- Singapore: https://lovi.care/skincare/sg/p/cos-de-baha/hydroquinone-brightening-serum/for/dry-skin
- Saudi Arabia: https://lovi.care/skincare/sa/p/cos-de-baha/hydroquinone-brightening-serum/for/dry-skin
- United Arab Emirates: https://lovi.care/skincare/ae/p/cos-de-baha/hydroquinone-brightening-serum/for/dry-skin