Natural Filling, Thickening & Shaping Bionic Hair Texture: The filler pen is formulated with micron-sized fibres that mimic the flu and luster of a real beard, blending seamlessly with the original beard to create a natural, thicker effect. Precise shaping: The pen tip is designed to be slim and easy to control, so it can precisely fill in sparse areas and easily outline the ideal beard shape. Long-lasting, waterproof and sweatproof 12 hours long-lasting: the formula contains colour locking factors and film-forming technology, so it is not easy to smudge or remove makeup after filling, meeting the needs of all-weather social and working needs. Water and Sweat Resistant: Even when exercising, sweating or in light rain, the beard will remain neat and tidy, avoiding embarrassing make-up removal. Safe and gentle for sensitive skin Non-irritating formula: Passed the skin irritation test, free of alcohol, flavourings, heavy metals and other harmful ingredients, so people with sensitive or acne-prone skin can use it without fear. Easy to remove: can be easily washed off with ordinary cleansing products or warm water, no need for special make-up removal steps to avoid residue damage to the skin. How to use Clean face: Make sure the beard area is dry and grease-free before use to avoid affecting the filler effect. Fill in sparse areas: Use the tip of the filler pen to gently press the sparse areas and fill in small amounts in the direction of beard growth. Combing: Gently comb the beard with the spiral brush head to evenly distribute the fibres and create a natural looking beard.