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Collagen Serum: Anti-Ageing & Firming

4.9 / 5 10 reviews
19.99 €

Discover our collagen serum, a complete anti-ageing treatment that visibly firms and plumps the skin. Complete your routine with our Hyaluronic Acid Serum for an enhanced anti-ageing effect. (50 ml)

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COLLAGEN SERUM - Youthful-looking skin

The firming power of collagen

Our collagen serum offers complete anti-ageing care: anti-wrinkle, brightening, firming and hydrating. For a synergistic effect, pair it with our 24K Gold Serum.

What collagen does Results
Anti-wrinkle Softens facial lines and wrinkles
Firmness Quickly restores skin firmness
Radiance Gives skin a brighter, more luminous glow

Why you'll love our Collagen Serum

Premium quality

  • • 98.8% natural ingredients
  • • ISO 22716 certified
  • • Paraben-free, gluten-free

Benefits

  • • All-round anti-ageing action
  • • Fast absorption
  • • Quick, visible results
Ingredients

Full ingredients

Key ingredients

  • Soluble collagen: Plumps and firms the skin
  • Vitamin B5: Regenerates and soothes
  • Vitamin E: Natural antioxidant
  • Allantoin: Soothing and regenerating
Formula analysis
Natural origin 98.8%
pH 5-6
Certification ISO 22716

INCI list

Aqua, soluble collagen, glycerol, allantoin, xanthan gum, vitamin B5, vitamin E.

How to use

How to get the best results

Morning routine

  1. Cleanse your face thoroughly
  2. Apply the serum to dry skin
  3. Avoid the eye area

Evening routine

  1. Cleanse your face
  2. Apply the serum, gently massaging it in
  3. Allow it to absorb before applying your night cream

Tips for use

  • Use on perfectly clean, dry skin
  • Apply morning and/or evening, as your skin needs
  • Take care to avoid the eye area
  • Can be worn under make-up
Frequently asked questions

At what age should I start using collagen serum?

Collagen serum can be used as soon as the first signs of ageing appear, usually from around 25-30. For a preventive approach, discover our Hyaluronic Acid Serum.

How can I get the most out of it?

For the best results, pair it with our 24K Gold Serum and stick to a regular routine.

How long does it take to see results?

The first results are visible from the very first applications, with smoother, firmer-looking skin. Optimal results are achieved after 4 to 8 weeks of regular use.

Need help?

Don't hesitate to get in touch:

  • Email: contact@byoucosmetiques.com
  • Instagram: @byou_cosmetiques

Customer reviews

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4.9
★ ★ ★ ★ ★
10 reviews
5★
9
4★
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0
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0
1★
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★ ★ ★ ★ ★
✓ Verified purchase
Lea M. · 22 September 2026

Pas decue

Je savais pas laquelle choisir, elles m'ont conseillee sur WhatsApp. Une gelule le matin, peau plus ferme, top 💕

★ ★ ★ ★ ★
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Manon M. · 25 July 2026

Bien pour raffermir

J'avais besoin de redonner un coup de boost à ma peau qui commençait à marquer. Je trouve que ça repulpe correctement, ma peau est plus rebondie. Contente de l'avoir pris en cure.

★ ★ ★ ★ ★
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Celine H. · 16 July 2026

Nickel

★ ★ ★ ★ ★
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Sofie H. · 30 June 2026

Huid voelt strakker aan

Na een maand gebruik merk ik dat mijn gezicht er voller uitziet. Fijne consistentie, trekt snel in. Ik combineer het met de hyaluronzuur variant en dat werkt goed samen.

★ ★ ★ ★ ★
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Simon J. · 28 May 2026
★ ★ ★ ★ ★
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Clara D. · 28 May 2026

Super contente

Franchement la texture pénètre vite et ça fait déjà une différence sur mes ridules.

★ ★ ★ ★ ★
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Theo S. · 27 May 2026

Équipe au top

J'ai posé plein de questions sur WhatsApp avant, ils ont pris le temps de bien me conseiller.

★ ★ ★ ★ ★
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Quentin L. · 23 May 2026

Je rachète ☺️

★ ★ ★ ★ ★
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Raphael H. · 20 May 2026
★ ★ ★ ★ ★
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Nathalie X. · 03 March 2025

J'adore

Le sérum sent bon et est agréable au touché. Une fois appliqué sur la peau on peu sentir la peau lisse et douce.

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