"Yes! The E13 features a flexible, waterproof polymer formula that resists:

Sweat & Humidity: Won’t melt or smear in hot weather
Water Exposure: Stays intact through light splashes (not for swimming)
Oily Eyelids: Tested for 10+ hours without smudging (use primer for extra hold)
⚠ Pro Tip: Let it dry for 15 seconds after application to fully set."

2. Can Beginners Create Sharp Winged Liner with the E13?

"Absolutely! The self-sharpening twist-up tip makes precision easy:

Ultra-Fine 1.5mm Tip: Draws thin, controlled lines with minimal pressure
No Skipping or Tugging: Glides smoothly without irritating sensitive eyes
Built-in Sharpener: No need for external tools (prevents breakage)
💡 Trick: Use small dotted lines first, then connect for perfect wings."

3. Is This Eyeliner Safe for Sensitive Eyes or Contact Lens Wearers?

"The E13 is ophthalmologist-tested & hypoallergenic:

Fragrance-Free & Paraben-Free: Reduces risk of irritation
Gentle Removal: Comes off easily with micellar water (no harsh rubbing)
Safe for Lenses: No flaking or transferring onto contacts
⚠ Avoid the inner waterline if you have extreme sensitivity."