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Makeup — Lashes

Lash serums, explained.

Longer, fuller-looking lashes are possible, with a little patience.

5 minute read

Written and reviewed by Beauty World Editorial · Last reviewed October 2026

Lash serum tube and spoolie on pink silk
Apply to the lash line only.
01

Types

What's inside

Prostaglandin analogues

Strongest results; can darken eyelids or iris colour in rare cases.

Peptide serums

Gentler conditioning; results are more subtle.

Conditioning oils

Help lashes look glossy and break less.

02

Steps

How to apply

1. Clean

Remove makeup and contact lenses.

2. One stroke

Brush along the upper lash line at night.

3. Let dry

Wait before applying other products.

4. Be consistent

Daily use for 8–12 weeks.

03

Safety

Side effects

Irritation

Stop if eyes itch, redden or water.

Ask a doctor

If you have glaucoma or eye conditions.

Common questions

How long do lash serums take to work?

Most people see changes after 6–12 weeks.

Do results last after stopping?

Lashes slowly return to normal over a few months.

Can I use lash serum on brows?

Many are suitable; check the label.