The agency was appointed after a competitive pitch, but blow LTD did not disclose how many agencies were involved.
The brand was previously working with Beauty Seen PR.
Lauren Stevenson, co-founder and director at Aisle 8, said: "How we consume brands and services has evolved as much as the media landscape. We are a nation of ‘want it here and now’. The brands that are adapting to this such as blow LTD, Uber and Deliveroo are leading the way, simplifying services for businesses as well as consumers."