Schmincke Titanium White gouache on Jacksons (UK/worldwide) here
For white highlights, I use a pro-grade PW6 titanium white gouache like Schmincke. It gives me opaque, clean highlights over watercolor without the frustration I had with gel pens. This is the Jackson’s link for UK/worldwide shoppers.

Isaro Watercolor Review & Painting. Favorite Colors, Pros & Cons, Pigments, Brand Overview.
12K views · 2022-07-31 23:10:37

A Gallo Watercolor Review - Swatch Cards, Rare Pigments, Favorite Colors (w/Guest Voice-Over)
18K views · 2022-06-18 05:22:11

NBr8 Lightfast Test - Vandyke Brown Holbein, ShinHan, Roman Szmal Van Dyck Watercolor Rating Problem
7K views · 2022-04-19 11:41:59

MeiLiang 48 PRETTY EXCELLENT WATERCOLOR REVIEW vs 36 Compare Paul Rubens. Lightfast Issues, Dye Test
6K views · 2022-03-31 00:06:24

Isaro Watercolor Review Powdery Pink & Nordmann Green + DIY MIX w/ Roman Szmal Single Pigment Paint
11K views · 2022-03-19 16:01:00

15 New Roman Szmal Watercolor Review 2021 2022 Colors Aquarius Rare Pigments Swatch & Cat Painting
15K views · 2022-03-09 11:00:23

PB33 Manganese Blue Genuine Watercolor Spotlight - Granulating Rare Pigment Available Prodigal Son's
7K views · 2022-02-12 19:13:30
Available on Jacksonsart
External purchase
Highlights
Recommended by
Kimberly Crick Art