4ml portable design, precise volume control and durability Slim brush head + roller ball applicator: For lashes: Brush head fits the curvature of the eyelid and brushes gently in a Z shape along the base of the lashes to avoid liquid getting into the eye; For eyebrows: the roller ball design precisely positions the shape of the brow and can be applied in the direction of hair growth to avoid waste. One brush can be used for about 60 times. Keep it in your bag when travelling for business, and take care of it in the morning and evening without any interruption. Safe and non-irritating, sensitive skin friendly Zero additives commitment: no hormones, no alcohol, no fragrance, no preservatives (except phenoxyethanol, which is an essential safety ingredient). Passed safety tests: tested by ophthalmologists and does not irritate eyes; skin patch test shows sensitisation rate below 0.1%. Gentle brush head design: 0.1mm ultra-fine silicone brush head, precise application without staining the eyelids, avoiding liquid flow into the eyes. Save your mind and energy by using two brushes in one Eyelash + Eyebrow Duo: Once in the morning and once in the evening, brush the root of eyelash and sweep the eyebrow along the hair stream, one bottle solves two major needs. Pre-makeup base: Apply a thin layer before make-up, mascara is easier to colour, eyebrow pencil to enhance colour development and reduce clumping.