Short answer. A thin, breathable layer you can peel. If the uniform needs three shirts to work, the uniform is wrong. Match the undershirt to the scrub, not the other way around.
Color of the layer
White or nude under navy and black. Avoid a bright layer that stripes through a V-neck. The undershirt should disappear.
Cold OR vs hot floor
Add a clean layer; do not buy a size up and drown in it in recovery. The medical scrub set should already fit.
Shop medical scrubs at Yireh
The Classic V-Neck set ($86), The Zip-Front Jumpsuit ($98), and The Fashion Flare set ($86) are built as medical scrubs — nine colors, real pockets, a cut you will still wear at hour ten. V-neck coverage notes live with The Classic.
