Pebeo Masking Fluid Pen 4mm line

This masking fluid comes in a pen with a 4mm bullet-tip and one spare nib replacement.  The fluid creates an impervious barrier to protect and preserve white areas of paper by blocking washes from flowing into unwanted areas. It applies pale blue.  Remove within one week of application.  Store horizontally.  Preferably use the marker within 6months of first use.  Great for watercolour, ink and diluted gouache.  Latex free.  Draw masking fluid, let dry, paint, let dry, then remove masking fluid with finger or masking fluid remover block