ColorWave® is a high-quality, water based concrete stain that penetrates deeply into concrete surfaces, delivering vibrant, long-lasting color. Ideal for both indoor and outdoor use, this semi-transparent stain is perfect for creating a marbled concrete finish similar to that of an acid stain. Formulated with low VOCs, ColorWave® is environmentally friendly and safe for use in any space. Safe: Safe for use in any space, ColorWave product must be sealed. Direct Colors ColorWave Black Water-based