This concept utilizes a roller ball mechanism with bearing balls that are around 1cm in diameter. This mechanism could be compared to how a ballpoint pen works where gravity pulls the oil/serum down and coats one half of the bearing ball and as the ball rotates in its socket, the oil/serum is transferred to the scalp. The form/grip of this concept is designed to fit either fingers or a palm through the top opening to allow the users to control the motion of the object as much as possible. The reservoir for the oil/serum sits directly on top of the bearing balls and is filled by unclicking the top portion of the handle, pouring the oil/serum in and then locking the top of the handle back onto the device. This concept overall would be approximately 15-20 cm in width/diameter to mimic the size of the average hand.
This circular brush which is about 10 cm in diameter, has thin tubes with roller ball tips. Like in ball-point pens, the liquid flows only when pressure is applied and stops flowing when there's no pressure. The thin tubes, arranged in concentric circles, ensure direct and easy access to scalp. The brush has a container that holds the liquid. The liquid flows throw the tubes. The translucent container indicates how much liquid is left. A sperical removable lid is present on the top. This is twisted and removed when we need to refill. The user wraps their fingers around the container.
This concept utilizes a form factor most users are familiar with, a paddle brush. This familiarity makes the device a more approachable solution while the larger size gives enough space for all the internal components such as the battery and vibration motors.
The product is stored in a container pressurized by a spring-operated plunger mechanism (This mechanism can just be replaceable cartridges too) which applies even pressure that just balances out the surface tension of the liquid menisci at the ends of the bristles, allowing the oil/serum to flow out uniformly from a set of hollow, silicone bristles with just enough hardness to feel like hands.
A vibration massage functionality is also considered, consisting of a simple rechargeable/replaceable battery and a vibration motor that can be operated by a switch/push button to activate both vibration and oil flow when pressed.
A simple, minimalistic design is considered for the overall product to give a more upscale appearance, and sustainable materials are considered for the overall enclosure.
This concept uses a rollerball mechanism and dispenses the oil from the bristles at the center. Fluid flow occurs as the roller gets in contact with the scalp and causes rotation of the roller, it would also prevent leakages. The bristles present at the outer periphery are used to massage and brush the scalp and hairs. We can also increase the number of bristles that dispense the oil just by increasing the dimension of the main reservoir. If we keep the handle solid we can add a vibrating motor for a feel-good factor as a value addition. If the motor is not used then we can make the handle in a spline skeleton manner, reducing the weight and giving the brush a different aesthetic.