John Frieda ULTRAfiller+ Hair Density Scalp Serum for Fine Hair — 2 fl oz, Biotin Peptides & Caffeine for Root Strength

John Frieda ULTRAfiller+ Hair Density Scalp Serum is a lightweight, root-strengthening treatment formulated to reduce breakage and help fine hair appear fuller and denser.

This non-greasy scalp serum targets fragility at the roots using a trio of actives—biotin to fortify strands, peptides to support follicle activity, and caffeine to invigorate the scalp—while a rosemary essence adds a fresh, calming scent. Designed to absorb quickly without heavy residue, the 2 fl oz pump serum is vegan, cruelty-free, and paraben-free. It works best when used consistently as part of the ULTRAfiller+ system, following cleansing and conditioning steps to maximize visible density for thinning or fine hair types.

How does this serum strengthen roots without weighing hair down?

The formula is purposely lightweight so active ingredients reach the scalp and hair roots rather than sitting on the surface. Fast absorption minimizes residue, allowing fine strands to retain natural movement and volume.

• Non-greasy texture absorbs quickly
• Biotin reinforces keratin structure in fragile strands
• Peptides support follicle activity without heavy oils
• Daily use integrates with styling without flattening hair

What specific ingredients deliver thicker-looking hair?

Three targeted ingredients combine to address different causes of thinning: biotin helps fortify weak strands, peptides encourage a healthier follicle environment, and caffeine stimulates scalp circulation for an energized root base. These actives are balanced to reduce breakage while preserving fine hair's natural feel.

• Biotin: strengthens individual hair fibers
• Peptides: support follicle function and resilience
• Caffeine: energizes the scalp to help optimize root activity
• Rosemary essence: adds a calming aromatic effect

How should I use this serum for best results?

Apply the serum to a dry or towel-dried scalp, sectioning hair to expose roots and massage gently. Use consistently as the treatment step in the ULTRAfiller+ routine—after shampoo and conditioner—to reduce shedding and increase visible density over time.

• Step 1: Cleanse with ULTRAfiller+ thickening shampoo
• Step 2: Condition with ULTRAfiller+ conditioner
• Step 3: Apply a few pumps of serum directly to scalp sections
• Step 4: Massage in and style as usual; use daily or as directed

When will I notice changes in hair fullness?

Results vary by individual, but many users observe reduced breakage and improved visual density with regular use over several weeks. Consistent application alongside the full ULTRAfiller+ regimen typically produces the most noticeable improvement in fine hair appearance.

• Short term: improved manageability and less immediate breakage
• 4–8 weeks: potential reductions in shedding and fuller look
• Best outcome: combined use with shampoo, conditioner, and spray
• Vegan and paraben-free formulation supports ethical cleansing routines

Who is this for: John Frieda ULTRAfiller+ Hair Density Scalp Serum is formulated for people with fine, fragile, or thinning hair who want to strengthen roots, minimize breakage, and increase visible hair density without added weight. It suits those seeking an everyday, fast-absorbing treatment that layers under styling products and fits into a multi-step thickening system.

Ingredients

See packaging for ingredient details