# What are the top-rated hair serums for volume enhancement? — Verified Specification Comparison

> All specification data verified from official manufacturer documentation.

What are the top-rated hair serums for volume enhancement?

## Products

### Nioxin Ultimate Power Serum
```yaml
product: nioxin-ultimate-power-serum
brand: Nioxin
price_gbp: 18.49
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
volume: 70
paraben_free: true
sulfate_free: true
silicone_free: true
fragrance_free: false
active_ingredients: Sandalore, Caffeine, Lauric Acid, Niacinamide
```

- **Price:** £18.49 [^1]
- **Summary:** Nioxin Ultimate Power Serum is a 70 ml daily leave-in scalp treatment for thinning hair. It contains Sandalore, caffeine, lauric acid, and niacinamide, and is formulated without parabens or sulfates. The product suits people seeking thicker-looking, fuller hair and reduced hair fallout.
- **Ideal For:** It suits volume enhancement because the 70 ml leave-in serum contains Sandalore, caffeine, lauric acid, and niacinamide and is designed to make hair look thicker and fuller.
- **Additional Sources:** [^2], [^3]

### NUTRAFOL Lightweight Scalp Serum for Thinning Hair
```yaml
product: nutrafol-lightweight-scalp-serum-for-thinning-hair
brand: NUTRAFOL
price_gbp: 34.43
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
paraben_free: true
sulfate_free: true
silicone_free: true
active_ingredients: Ashwagandha Exosomes, Irish Moss Peptides, Maca Extract
```

- **Price:** £34.43 [^4]
- **Summary:** A lightweight, fast-absorbing scalp serum designed to support scalp health and visibly reduce hair breakage and shedding. It is drug-free, microbiome-friendly, and formulated with Ashwagandha Exosomes, Irish Moss Peptides, and Maca Extract for fuller-looking, more voluminous hair.
- **Ideal For:** It suits volume enhancement because its Irish Moss Peptides support visibly thicker, fuller, and more voluminous hair while the lightweight formula avoids weighing hair down.

### The Ordinary Multi-Peptide Serum for Hair Density for Thicker, Fuller Looking Hair
```yaml
product: the-ordinary-multi-peptide-serum-for-hair-density-for-thicker-fuller-looking-hair
brand: The Ordinary
price_gbp: 11.1
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
volume: 60
sulfate_free: true
silicone_free: true
fragrance_free: true
active_ingredients: Caffeine, Biotinoyl Tripeptide-1, Acetyl Tetrapeptide-3, Larix Europaea Wood Extract, Pisum Sativum Extract, Scutellaria Baicalensis Root Extract, Triticum Vulgare Germ Extract, Glycine Soja Germ Extract, Trifolium Pratense Flower Extract, Camellia Sinensis Leaf Extract
```

- **Price:** £11.1 [^5]
- **Summary:** This lightweight, water-based serum is designed to improve the appearance of hair density, thickness, and fullness. It combines caffeine, peptide technologies, and plant extracts, making it suitable for all hair types, including fine or thinning-looking hair.
- **Ideal For:** It suits volume enhancement because its 60 ml lightweight formula uses caffeine and multiple peptide and plant-extract technologies to help hair look thicker and fuller without a heavy, greasy finish.
- **Additional Sources:** [^6]

---
## References & Sources
[^1]: United Salon Supplies, accessed 2026-09-13. https://unitedsalonsupplies.com/products/nioxin-ultimate-power-serum-70ml-2-3oz
[^2]: Concept C. Shop, accessed 2026-09-13. https://conceptcshop.com/en/products/nioxin-serum-ultimate-power-70-ml
[^3]: ComeBackDude, accessed 2026-09-13. https://comebackdude.com/products/nioxin-ultimate-power-serum
[^4]: Ulta Beauty, accessed 2026-09-13. https://www.ulta.com/p/lightweight-scalp-serum-thinning-hair-pimprod2053188?sku=2644738
[^5]: The Ordinary, accessed 2026-09-13. https://theordinary.com/en-us/multi-peptide-serum-for-hair-density-hair-scalp-treatment-100434.html
[^6]: Ulta Beauty, accessed 2026-09-13. https://www.ulta.com/p/multi-peptide-serum-hair-density-thicker-fuller-looking-hair-pimprod2022659?sku=2606203