FOREO LUNA 4

What a silicone cleansing device actually changes

FOREO’s hygiene case is built on a comparison with nylon-bristle brushes, and on that comparison it is mechanically sound: silicone is non-porous, so it does not hold water and residue in the way bristles do, and it rinses clean rather than needing replacement heads. The part worth noticing is that for most buyers, the brush being replaced is not a nylon-bristle brush at all. It is hands, or a flannel. Judged against that alternative, the honest claim is a more modest one.

Cleansing is also the least differentiated step in a routine. A device changes how thoroughly surface makeup and sunscreen lift, and how the step feels; it is not doing the work that actives do later in the routine. Buying one to improve cleansing is reasonable. Buying one expecting it to substitute for the rest of a routine is the mistake this category invites.

The intensity range, and why the low end matters most

The device runs T-Sonic pulsations through soft silicone touchpoints across 16 adjustable levels, grouped into gentle, regular and deep-cleanse bands, with a second side offering firming massage routines. Sixteen levels reads as a specification-sheet number, but the useful part is the bottom of the range rather than the top: the failure mode with any powered cleansing tool is over-cleansing, and a device that goes gentle enough to use daily on sensitive skin is more useful than one that goes hard.

The battery question, which decides how long you own it

Power comes from a small internal lithium-polymer cell charged over USB-C, and FOREO quotes roughly 400 to 600 one-minute uses from a full charge, which is four to six months of daily use between charges. That is genuinely good, and it is the number the marketing leads with.

The number it does not lead with is what happens afterwards. There is no published user-serviceable route to replacing that cell, so the usable life of the device is ultimately the life of its battery. On a premium tool sold against a flannel that lasts indefinitely, that is the main long-term consideration, and it belongs in the decision alongside the purchase price.

The account requirement

Setup runs through the FOREO app and requires creating an account, which reviewers consistently flag as friction. It is a small thing, but it is the kind of small thing worth knowing in advance: if you would rather not register an account to use a cleansing brush, this is not the device for you.