Yarnundyed UNDYED, NATURAL FIBRE YARNS FOR HAND DYERS. Yarnundyed is a range of undyed (or bare) natural fibre yarns dedicated to hand dyers requiring the best natural … UNDYED, NATURAL FIBRE YARNS FOR HAND DYERS. Yarnundyed is a range of undyed (or bare) natural fibre yarns dedicated to hand dyers requiring the best natural …