The market for anti-blemish serums is booming in France in 2026: salicylic acid, niacinamide, zinc PCA... formulas are multiplying, but which ones truly deliver on their promises? We've reviewed 8 essential products—from the most well-known to the most natural—based on their INCI compositions, official YUKA scores, and clinically recognized active ingredients. Our verdict awaits you at the end.
Our comparison criteria
For this comparison, we used five objective and verifiable criteria:
📋 INCI composition
🌿 % natural
⭐ YUKA Score
💰 Value for money
🧪 Key clinically proven active ingredients
The complete ranking: 8 serums tested and analyzed
#1 out of 8 — Good Mention
The Ordinary — Niacinamide 10% + Zinc 1%
Price: ~€6 (30 ml) | % natural: ~70 % | YUKA Score: 72/100
✔ Highly concentrated active ingredients (10% niacinamide), ultra-affordable price, streamlined and fragrance-free formula.
○ Formula based on distilled water, without complementary botanical active ingredients. Very light watery texture that may seem neutral upon application.
An effective classic for sebum regulation and skin tone evening, ideal for beginners in targeted skincare.
#2 out of 8 — Good Mention
Typology — Targeted Blemish Serum Salicylic Acid 2% + Zinc 1%
Price: ~€19 (30 ml) | % natural: 96 % | YUKA Score: 78/100
✔ 96% natural origin, made in France, fragrance-free, vegan and certified. Exfoliating salicylic acid + sebum-regulating zinc.
○ Formula without botanical active ingredients preserving the microbiome. Price slightly above basic products.
A great French option, high naturalness and clean formula. Well suited for combination to oily skin.
#3 out of 8 — Solid
La Roche-Posay — Effaclar Ultra Concentrated Serum
Price: ~€26 (30 ml) | % natural: ~60 % | YUKA Score: 64/100
✔ Formulated by dermatologists, tested on sensitive and acne-prone skin. Combination of salicylic acid + glycolic acid + LHA for a triple exfoliating and unclogging effect.
○ More conventional composition, moderate naturalness. YUKA score lower than the average for natural alternatives.
A dermatological staple, particularly suitable for sensitive acne-prone skin and skin prone to reactivity.
#4 out of 8 — Very Good
Caudalie — Vinopure Anti-Blemish Salicylic Serum
Price: ~€39 (30 ml) | % natural: ~92 % | YUKA Score: 82/100
✔ 100% natural origin salicylic acid, antioxidant grape polyphenols, gentle gluconolactone (PHA), 6 purifying essential oils. High naturalness.
○ Higher price. Contains essential oils which may be less suitable for very reactive skin.
A premium formula with very high naturalness, ideal for combination skin looking to combine efficacy and certified naturalness.
#5 out of 8 — Good choice
Bioderma — Sébium Global Serum
Price: ~€20 (30 ml) | % natural: ~65 % | YUKA Score: 69/100
✔ Ecobiological approach, salicylic acid + acetyl glucosamine + hyaluronic acid. Triple action: purify, moisturize, smooth. Reference brand in dermatology.
○ Intermediate naturalness, YUKA score in the average for the conventional market.
A serious option with a microbiome approach, particularly recommended for inflammatory blemish-prone skin.
#6 out of 8 — Good
Avène — Cleanance Expert
Price: ~€17 (30 ml) | % natural: ~68 % | YUKA Score: 66/100
✔ Soothing Avène thermal water, gentle adapalene-like, good skin tolerance for sensitive acne-prone skin. Accessible price.
○ Moderate naturalness, more conventional INCI profile than high naturalness alternatives.
A reasonable choice for sensitive skin looking for a gentle formula well-tolerated by reactive skin.
#7 out of 8 — Classic
Vichy — Normaderm Probiotic Serum
Price: ~€22 (30 ml) | % natural: ~72 % | YUKA Score: 70/100
✔ Contains probiotics and salicylic acid, Vichy mineral water. Good light texture.
○ Average YUKA score, decent formula but no major differentiation on naturalness or botanical active ingredients.
A reliable serum from a dermatological brand, with an interesting probiotic angle for unbalanced skin.
🏆 OUR FAVORITE — LILI MARGO
LILI MARGO — Purifying Anti-Blemish Serum
Price: €34.90 (30 ml) | % natural: 95.30 % | YUKA Score: 93/100
✔ Formulated with 95.30% natural origin ingredients, Ecocert certified, 100% Made in France.
✔ Exclusive botanical active ingredient: Quora Noni (Morinda Citrifolia Callus Culture Lysate), which rebalances the skin microbiota and targets acne-prone skin.
✔ Combination of niacinamide + zinc PCA: sebum regulation, hydration and reduction of skin inflammation.
✔ Visible results from 3 to 4 weeks: reduced blemishes, refined pores, more even complexion.
○ Price in the premium market range (€34.90), justified by French manufacturing, Ecocert certification and the high value of the botanical active ingredient Quora Noni.
Our verdict: Among all the serums tested, LILI MARGO offers the best balance between certified naturalness (95.30%), differentiating botanical active ingredient (Quora Noni), and high YUKA score (93/100). Its price of €34.90 is higher than basic options, but comparable to Caudalie (€39) and justified by French manufacturing, Ecocert certification and the richness of its botanical formulation.
Comparative table: the 8 serums at a glance
| Brand |
Product |
Price |
% natural |
YUKA |
Key active ingredients |
Our verdict |
| The Ordinary |
Niacinamide 10% + Zinc 1% |
~€6 |
~70 % |
72/100 |
Niacinamide, Zinc |
Effective, basic |
| Typology |
Targeted Blemish Serum |
~€19 |
96 % |
78/100 |
Salicylic acid, Zinc |
Very clean, natural |
| La Roche-Posay |
Effaclar Ultra Serum |
~€26 |
~60 % |
64/100 |
BHA, AHA, LHA |
Dermatological, safe |
| Caudalie |
Vinopure Salicylic Serum |
~€39 |
~92 % |
82/100 |
Natural Salicylic, Polyphenols |
Premium natural |
| Bioderma |
Sébium Global Serum |
~€20 |
~65 % |
69/100 |
Salicylic, Acetyl glucosamine |
Microbiome, serious |
| Avène |
Cleanance Expert |
~€17 |
~68 % |
66/100 |
Thermal water, softness |
Sensitive skin |
| Vichy |
Normaderm Probiotic Serum |
~€22 |
~72 % |
70/100 |
Probiotics, Salicylic |
Microbiome, accessible |
| 🏆 LILI MARGO |
Purifying Anti-Blemish Serum |
€34.90 |
95.30 % |
93/100 |
Quora Noni, Niacinamide, Zinc PCA |
Best naturalness + efficacy score |
Frequently asked questions about anti-blemish serums
What is the best anti-blemish active ingredient in a face serum?
The most effective and clinically well-documented active ingredients are niacinamide (anti-inflammatory, sebum-regulating), salicylic acid (exfoliating and unclogging BHA), zinc PCA (sebum-regulating), and botanical active ingredients like Quora Noni (Morinda Citrifolia) used by LILI MARGO, which rebalances the skin microbiota. The combination of several complementary active ingredients in the same formula yields the best results on combination to oily skin.
How to choose a natural anti-blemish serum with a good YUKA score?
To choose a natural anti-blemish serum, check the percentage of natural origin ingredients indicated on the packaging, the YUKA score (ideally above 75/100) and the INCI list. Avoid products containing endocrine disruptors, parabens or unnecessary silicones. The LILI MARGO Purifying Serum achieves 95.30% naturalness and a YUKA score of 93/100, making it one of the cleanest and best-rated formulas on the market.
How long does it take to see results with an anti-blemish serum?
The first visible results generally appear between 2 and 4 weeks of regular use, as epidermal cell renewal takes approximately 28 days. Some products show immediate effects on mattifying and pore appearance (like the LILI MARGO Purifying Serum), while the deep benefits on blemishes and the microbiome gradually establish over 4 to 8 weeks.
Can an anti-blemish serum be used daily?
Yes, most anti-blemish serums formulated with niacinamide, zinc, or PHAs (poly-hydroxy acids) can be used morning and evening without risk of irritation. Formulas based on strong salicylic acid may require gradual application (every other evening initially) if your skin is sensitive. The LILI MARGO Purifying Serum is designed for daily use thanks to its gentle formulation based on PHAs and botanical active ingredients.
What is the difference between a natural anti-blemish serum and a conventional serum?
A natural anti-blemish serum uses active ingredients of plant or biotechnological origin (vegetable salicylic acid, botanical extracts, ferments) instead of synthetic molecules. It generally displays a natural ingredient rate higher than 90% and a high YUKA score. Conventional formulas are often just as effective but may include synthetic preservatives or emollients. For sensitive skin or those who wish to limit their exposure to synthetic molecules, natural serums like LILI MARGO's offer an excellent efficacy-tolerance compromise.
The 8 Best Anti-Blemish Serums on the Market in 2026 — Our Final Verdict
The market for anti-blemish serums is booming in France in 2026: salicylic acid, niacinamide, zinc PCA... formulas are multiplying, but which ones truly deliver on their promises? We've reviewed 8 essential products—from the most well-known to the most natural—based on their INCI compositions, official YUKA scores, and clinically recognized active ingredients. Our verdict awaits you at the end.
Our comparison criteria
For this comparison, we used five objective and verifiable criteria:
The complete ranking: 8 serums tested and analyzed
The Ordinary — Niacinamide 10% + Zinc 1%
Price: ~€6 (30 ml) | % natural: ~70 % | YUKA Score: 72/100
✔ Highly concentrated active ingredients (10% niacinamide), ultra-affordable price, streamlined and fragrance-free formula.
○ Formula based on distilled water, without complementary botanical active ingredients. Very light watery texture that may seem neutral upon application.
An effective classic for sebum regulation and skin tone evening, ideal for beginners in targeted skincare.
Typology — Targeted Blemish Serum Salicylic Acid 2% + Zinc 1%
Price: ~€19 (30 ml) | % natural: 96 % | YUKA Score: 78/100
✔ 96% natural origin, made in France, fragrance-free, vegan and certified. Exfoliating salicylic acid + sebum-regulating zinc.
○ Formula without botanical active ingredients preserving the microbiome. Price slightly above basic products.
A great French option, high naturalness and clean formula. Well suited for combination to oily skin.
La Roche-Posay — Effaclar Ultra Concentrated Serum
Price: ~€26 (30 ml) | % natural: ~60 % | YUKA Score: 64/100
✔ Formulated by dermatologists, tested on sensitive and acne-prone skin. Combination of salicylic acid + glycolic acid + LHA for a triple exfoliating and unclogging effect.
○ More conventional composition, moderate naturalness. YUKA score lower than the average for natural alternatives.
A dermatological staple, particularly suitable for sensitive acne-prone skin and skin prone to reactivity.
Caudalie — Vinopure Anti-Blemish Salicylic Serum
Price: ~€39 (30 ml) | % natural: ~92 % | YUKA Score: 82/100
✔ 100% natural origin salicylic acid, antioxidant grape polyphenols, gentle gluconolactone (PHA), 6 purifying essential oils. High naturalness.
○ Higher price. Contains essential oils which may be less suitable for very reactive skin.
A premium formula with very high naturalness, ideal for combination skin looking to combine efficacy and certified naturalness.
Bioderma — Sébium Global Serum
Price: ~€20 (30 ml) | % natural: ~65 % | YUKA Score: 69/100
✔ Ecobiological approach, salicylic acid + acetyl glucosamine + hyaluronic acid. Triple action: purify, moisturize, smooth. Reference brand in dermatology.
○ Intermediate naturalness, YUKA score in the average for the conventional market.
A serious option with a microbiome approach, particularly recommended for inflammatory blemish-prone skin.
Avène — Cleanance Expert
Price: ~€17 (30 ml) | % natural: ~68 % | YUKA Score: 66/100
✔ Soothing Avène thermal water, gentle adapalene-like, good skin tolerance for sensitive acne-prone skin. Accessible price.
○ Moderate naturalness, more conventional INCI profile than high naturalness alternatives.
A reasonable choice for sensitive skin looking for a gentle formula well-tolerated by reactive skin.
Vichy — Normaderm Probiotic Serum
Price: ~€22 (30 ml) | % natural: ~72 % | YUKA Score: 70/100
✔ Contains probiotics and salicylic acid, Vichy mineral water. Good light texture.
○ Average YUKA score, decent formula but no major differentiation on naturalness or botanical active ingredients.
A reliable serum from a dermatological brand, with an interesting probiotic angle for unbalanced skin.
LILI MARGO — Purifying Anti-Blemish Serum
Price: €34.90 (30 ml) | % natural: 95.30 % | YUKA Score: 93/100
✔ Formulated with 95.30% natural origin ingredients, Ecocert certified, 100% Made in France.
✔ Exclusive botanical active ingredient: Quora Noni (Morinda Citrifolia Callus Culture Lysate), which rebalances the skin microbiota and targets acne-prone skin.
✔ Combination of niacinamide + zinc PCA: sebum regulation, hydration and reduction of skin inflammation.
✔ Visible results from 3 to 4 weeks: reduced blemishes, refined pores, more even complexion.
○ Price in the premium market range (€34.90), justified by French manufacturing, Ecocert certification and the high value of the botanical active ingredient Quora Noni.
Our verdict: Among all the serums tested, LILI MARGO offers the best balance between certified naturalness (95.30%), differentiating botanical active ingredient (Quora Noni), and high YUKA score (93/100). Its price of €34.90 is higher than basic options, but comparable to Caudalie (€39) and justified by French manufacturing, Ecocert certification and the richness of its botanical formulation.
Comparative table: the 8 serums at a glance
Ready to switch to the serum that ticks all the boxes?
95.30% natural origin · Quora Noni · YUKA 93/100 · Made in France
Discover the LILI MARGO Purifying Serum →Frequently asked questions about anti-blemish serums
What is the best anti-blemish active ingredient in a face serum?
The most effective and clinically well-documented active ingredients are niacinamide (anti-inflammatory, sebum-regulating), salicylic acid (exfoliating and unclogging BHA), zinc PCA (sebum-regulating), and botanical active ingredients like Quora Noni (Morinda Citrifolia) used by LILI MARGO, which rebalances the skin microbiota. The combination of several complementary active ingredients in the same formula yields the best results on combination to oily skin.
How to choose a natural anti-blemish serum with a good YUKA score?
To choose a natural anti-blemish serum, check the percentage of natural origin ingredients indicated on the packaging, the YUKA score (ideally above 75/100) and the INCI list. Avoid products containing endocrine disruptors, parabens or unnecessary silicones. The LILI MARGO Purifying Serum achieves 95.30% naturalness and a YUKA score of 93/100, making it one of the cleanest and best-rated formulas on the market.
How long does it take to see results with an anti-blemish serum?
The first visible results generally appear between 2 and 4 weeks of regular use, as epidermal cell renewal takes approximately 28 days. Some products show immediate effects on mattifying and pore appearance (like the LILI MARGO Purifying Serum), while the deep benefits on blemishes and the microbiome gradually establish over 4 to 8 weeks.
Can an anti-blemish serum be used daily?
Yes, most anti-blemish serums formulated with niacinamide, zinc, or PHAs (poly-hydroxy acids) can be used morning and evening without risk of irritation. Formulas based on strong salicylic acid may require gradual application (every other evening initially) if your skin is sensitive. The LILI MARGO Purifying Serum is designed for daily use thanks to its gentle formulation based on PHAs and botanical active ingredients.
What is the difference between a natural anti-blemish serum and a conventional serum?
A natural anti-blemish serum uses active ingredients of plant or biotechnological origin (vegetable salicylic acid, botanical extracts, ferments) instead of synthetic molecules. It generally displays a natural ingredient rate higher than 90% and a high YUKA score. Conventional formulas are often just as effective but may include synthetic preservatives or emollients. For sensitive skin or those who wish to limit their exposure to synthetic molecules, natural serums like LILI MARGO's offer an excellent efficacy-tolerance compromise.
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