Paper used for watercolor painting is 100% cotton and rough texture.

Cold Press vs Hot Press watercolor paper – Here's how to choose ! - Watercolor Affair

How to Choose the Right Watercolour Paper

Chitrapat watercolor paper blocks 440 GSM

The Brustro Watercolour paper is mould made produced with 100% cotton without optical brighteners. The absence of acid guarantees the inalterability

BRUSTRO Artists' Watercolour Papers 100% Cotton 300 GSM A4 Rough (Pack of 5 + 1 Free Sheet)

Watercolor Paper Pad - Cotton

Please help. Which side do I use? The rougher side looks weird but it's supposed to be the front. : r/Watercolor

What is the best watercolour paper to use? — Louise De Masi Watercolour Artist

10 Best Selling Rough Watercolor Papers for 2023 - The Jerusalem Post

What Side of Watercolor Paper to Use? Best Side To Use! - A.O.Y. Art Center

Dianne Sutherland: Which Watercolour Paper?