This is waterproof, which is very handy during summer.
From Amazon
lavera Soft Lipliner -Red 03- Smooth, creamy and long-lasting formula Natural cosmetics Make-up Organic plant ingredients 100% natural make-up (1.4 g)
The product is available from £4.27 at international stores.
Parfumdreams
Lavera Make-up Lips Soft Lipliner No. 03 Red