Honest Beauty Extreme Length Mascara + Primer I'm not exaggerating when I tell you that the Honest Beauty Extreme Length Mascara + Primer (£19) is probably the best clean mascara formula I've ever used. The fibre-based primer ensures your lashes look superlong, while the mascara formula is shiny and flexible, meaning it doesn't flake into your eyes halfway through the day — an issue I've had with many clean mascaras in the past. Image Source: boots.com Honest Beauty Extreme Length Mascara + Primer £19 from boots.com Buy Now