L'Oréal Serioxyl Denser Hair Serum is a daily-use leave-in serum from L'Oréal Professionnel's iconic Serioxyl line. Designed to help thicken and densify thinning hair, the lightweight formula leaves hair feeling fuller, thicker and beautifully manageable with continued use.
About L'Oréal Professionnel Serioxyl
L'Oréal Professionnel Serioxyl is one of the brand's most trusted professional haircare lines, designed specifically to address thinning hair concerns.
Key benefits
- Daily-use leave-in densifying serum.
- Helps thicken and densify thinning hair.
- Lightweight, easy-to-use formula.
- Generous 90 ml format.
Who it's for
Designed for those with thinning hair who want a daily-use leave-in serum to help fuller, thicker-feeling hair.
How to use
- Apply daily to clean, towel-dried hair.
- Section the hair and apply directly to the scalp using the precision applicator.
- Massage gently into the scalp.
- Do not rinse out — style as usual.
Specifications
- Size: 90 ml
- Format: leave-in densifying serum
- Hair type: thinning hair
- Use: daily



