Spec-by-spec

Head to head

Contenders from Lash & Brow Serums, every metric lined up. The winning value in each row is outlined.

Price

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Rating

★★★★★

Category rank

Regrowth Efficacy

Fuller lashes in 6–8 weeks

Fuller, defined brows in 6–8 weeks; full results in 4 months

Fuller, darker brows in 8–12 weeks

Irritation

Ophthalmologist tested, rare irritation reports

Dermatologist-approved; rare irritation reports; no documented darkening

Prostaglandin-free; rare irritation if applied carefully

Cost per Month

$36/month (~$1.20/day)

~$9.50–$10.75/month; mid-range for peptide serums

~$8–$10/month; mid-premium for peptide serum

Peptide Potency

Multi-peptide + biotin, panthenol, castor oil

Multi-peptide + vitamins, biotin, panthenol, antioxidants

Multi-peptide + castor oil, biotin, panthenol

Clean Formula

Prostaglandin-free, fragrance-free, cruelty-free

Prostaglandin-free, vegan, paraben-free, fragrance-free

Prostaglandin-free, no major irritants noted

Ease of Use

Once-daily brush application, straightforward

Soft-tip brush, once-daily application, precise for brow area

2-in-1 tinted gel; once-daily, simple brush applicator

Verdict

Solid mid-premium peptide serum with proven lash growth

Proven brow peptide serum, gentle and accessible

Solid mid-tier peptide brow serum with proven brand backing

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