Calcium Hydroxide – Hydrated Lime for Natural Dyeing

from £2.25

This natural calcium hydroxide (also known as hydrated lime, slaked lime, or calx) is a versatile, high-quality product derived from limestone and water. Valued in both traditional crafts and ecological applications, it is especially important in natural dyeing for preparing indigo vats and supporting resist techniques.

Ideal for Natural Dyeing:

  • Indigo vats: Raises pH and supports the reduction process, allowing indigo to dissolve fully.

  • Organic indigo dye baths: Works with ingredients like iron or fructose syrup (e.g. the 1-3-2 vat inspired by Michel Garcia).

  • Fabric pre-soak: Deepens and enriches indigo shades when textiles are pre-soaked in lime water.

  • Nori paste (Japanese resist): Helps rice starch swell, giving body to the paste and extending its shelf life.

A must-have for natural dyers working with indigo, and a useful addition to any natural dye studio.

Size:

This natural calcium hydroxide (also known as hydrated lime, slaked lime, or calx) is a versatile, high-quality product derived from limestone and water. Valued in both traditional crafts and ecological applications, it is especially important in natural dyeing for preparing indigo vats and supporting resist techniques.

Ideal for Natural Dyeing:

  • Indigo vats: Raises pH and supports the reduction process, allowing indigo to dissolve fully.

  • Organic indigo dye baths: Works with ingredients like iron or fructose syrup (e.g. the 1-3-2 vat inspired by Michel Garcia).

  • Fabric pre-soak: Deepens and enriches indigo shades when textiles are pre-soaked in lime water.

  • Nori paste (Japanese resist): Helps rice starch swell, giving body to the paste and extending its shelf life.

A must-have for natural dyers working with indigo, and a useful addition to any natural dye studio.