Mavala Double-Brow Eyebrow Strength & Density Serum , 4.5 mlfrom £14.47 up to £20.70 Compare prices4→DOUBLE-BROW works from the root at all stages of the eyebrow life cycle. It stimulates growth, strength, density, and natural eyebrow color. Instructions for use more→ Apply to eyebrows using the patented applicator, morning and night. Ingredients • Plant exosomes: act as cellular messengers to reactivate growth and density. • Resurrection plant: strengthens eyebrow anchorage. • Pistacia lentiscus: stimulates keratin synthesis.