Margaret Dabbs London Treatment Enriched Nail Polish in Cunard Red. About Margaret Dabbs Nail Treatment Protect and replenish sensitive, weak and brittle nails with this enriched treatment from Margaret Dabbs. Designed to be used as a stand alone treatment or as a base coat for your favourite colour, this richly formulated nail polish protects and fortifies whilst providing a light, translucent colour to the nails. Enriched with vitamin E and wild rose extract, nails are nourished and scented with the luscious smell of roses.