The Fourth shelf size about 12x4.13x2.95 inch, the Fifth small wall shelves size about 10.67x3.74x2.48 inch.

you could always split these shelves out per person, to keep your different lotions and potions separate. One of the easiest ...

“When selecting a shelf for a small bathroom, opt for a slim and streamlined design, as this won't overpower the space.” ...