# ILIA Thru Line Waterproof Eyeliner

> ILIA lists ten matte and shimmer shades with avocado-oil-coated pigments. The brand describes the pencil as waterproof, with up to 24-hour wear; blend promptly before it sets.

- Canonical: https://thecastindex.com/beauty/ilia-thru-line-waterproof-eyeliner
- Category: Eyes & brows
- Format: Waterproof eyeliner pencil
- Finish: Matte or shimmer
- Best for: A defined line or softly blended eye
- Official: https://iliabeauty.com/products/24h-thru-line-waterproof-eyeliner
- Reviewed: 2026-09-08
- Method: evidence-led desk review of official specifications — not an implied hands-on test

A pencil alternative to liquid liner when you want a softer edge or a quick smoky shape.

## Selection evidence

July 2026 launch: ILIA announced Thru Line Waterproof Eyeliner on 28 July 2026.

Source: https://www.prnewswire.com/news/ilia-beauty/
Checked: 2026-09-08

## Who should consider it?

A pencil gives you time to soften the line before it sets. Choose liquid liner instead if your priority is an exceptionally fine, crisp wing. Keep the rest of the eye quieter when using a visibly reflective shade.

## What should you check before buying?

Waterproof and long-wear claims do not guarantee comfortable wear for every eye. Follow the selected shade’s eye-area directions and use an appropriate remover without rubbing.

## How to use it

1. Apply in short strokes along the lash line as directed by ILIA.
2. Blend promptly if you want a softer edge.
3. Let the pencil set and remove gently at the end of wear.

## Questions and answers

### Can Thru Line create a smoky eye?

Yes. ILIA advises blending before the waterproof formula sets. A brush can soften a small line; build gradually instead of drawing a heavy shape first.

## Explore the category

https://thecastindex.com/beauty/category/eyes-brows