?? ?WIDE Application? Thin or Thick Cosmetic All Suitable, Search as Jojoba Oil, Lip Gloss, Nail Nutrition Oil, Hair Growth Serum, Foundations, Creams etc;Caution: The Empty Pen is not suitible for Strong Acids or Higher Alcohol Liquid.ozone or Ultraviolet Disinfection Recommond IF Needed.?? ?LEAK-PROOF & PORTABLE? Leak Proof Brush Top With Tight Cap, no Leaks.the Pen Size is 0.67 ”DIA.x 5.75''hight with 6ml Capcacity, more Larger Capacity with portable size.Easy to carry in pocket or bags, perfect for on the go.?? ?Using Steps? ?Twist off Inner tube.?fill Inner tube with pipette or dropper.?Twist on Filled Tube and Tighten It.? Press Black button to use.using tips: When used up, off Inner tube and push stopper to bottom, then refill it.?? ?Thumb Press Dispensense, Donot Need Twist? Just press black button, Inner Vacumm pump will work to dispense Oil out.Realse one hand, cell phone operates.?? ?Real Refillable? The Empty Cuticle Oil Pen Could Easily Twist Off Inner Tube for Filling and Refilling.save Money, no Waste !!!.?? ?WIDE APPLICATION?Thin or Thick cosmetic all suitable, such as JOJOBA oil,lip gloss, nail nutrition oil,hair growth serum,foundations,creams etc; CAUTION: The empty pen is not suitable for strong acids or higher alcohol liquid.Ozone or ultraviolet disinfection recommond if needed. ?? ?LEAK-PROOF & PORTABLE?Leak-proof brush top with tight cap,No Leaks.The pen size is 0.67”dia. x 5.75''hight with 6ml capcacity,More Larger Capacity with Portable Size.Easy to carry in pocket or bags, perfect for on the go. ?? ?USING STEPS??Twist off inner tube.?Fill inner tube with pipette or dropper. ?Twist on filled tube and tighten it.? Press BLACK button to use.USING TIPS: When used up,off inner tube and PUSH STOPPER to bottom,then REFILL it. ?? ?THUMB PRESS DISPENSE, DONOT NEED TWIST?Just press black button, inner vacumm pump will work to dispense oil out.Realse one hand, Handy Operate. ?? ?REAL REFILLABLE?The empty cuticle oil pen could easily twist off inner tube for filling and refilling.SAVE MONEY, NO WASTE!!!.3-Pack 6ml Real Refillable Cuticle Oil Pens, Reusable Empty Pen to Easy Refill Jojoba Oil/Nail Oil/Hair Oil, Single Hand Press Transparent Cosmetic Container Pens Applicator