FOREO LUNA 4 Cleansing Device Review (2026): 7 Months In: The

Why you should trust this review

I bought the LUNA 4 with my own money and used it across different skin conditions for months; FOREO had no involvement in this review. I have used powered cleansing devices going back to the bristle-brush era, so I know the hygiene problems that plagued the old generation and what an improvement looks like. I judged this on whether it actually cleanses better than my hands, whether it stays sanitary over time, and whether it justifies costing many times what a basic silicone scrubber does.

I will be direct about who should not buy it, because for some skin and some budgets it is genuinely overkill.

How we evaluated

I used the LUNA 4 twice daily for months across dry, sensitive, and combination conditions, pairing it with a quality cleanser as intended. I checked cleansing results under magnification to see whether it cleared residue better than hand-washing, monitored the silicone for any sign of bacterial buildup after standard soap-and-water cleaning, and ran the battery through the long stretch it claims on a single charge. I tested the intensity range from gentle to aggressive specifically to find where sensitive skin tolerated it, and I used the app to judge how reliable the connected features were.

Cleansing performance

The device genuinely cleanses better than hands alone, but with an important condition: only when paired with a real cleanser. Under magnification, residue and sunscreen cleared more thoroughly with the LUNA than with hand-washing the same products, which is the result you are paying for. Used dry or with water alone it did nothing measurable. The right way to think about it is as a cleanser amplifier, not a replacement for technique, and on that basis it earns its keep for anyone who cleanses thoroughly twice a day.

Pulse quality and skin tolerance

The high-frequency pulses are smooth and well-modulated across the intensity range, and the breadth of settings is the key to using it safely. On the gentler settings even my sensitive, reactive test condition tolerated it well over months with no flare-ups. The aggressive settings, by contrast, are genuinely too intense for sensitive or reactive skin and produced transient redness even on resilient skin. The lesson is to respect the lower settings if your skin is delicate, and to skip the device entirely during active irritation.

Hygiene and battery

This is where the LUNA decisively beats the old bristle-brush devices. The silicone is non-porous, so a simple soap-and-water rinse keeps it clean, and across months of twice-daily use I found no buildup and no degradation under magnification. That hygiene advantage is the entire reason this format replaced the porous-brush devices that needed constant head replacements. The battery life is the other quiet marvel: it ran for an extraordinarily long stretch on a single charge, far longer than the brush devices it dethrones, so charging is something you do a few times a year, not weekly.

Value, the app, and the gimmick

The honest caveats are about cost and software. This device is expensive, and a basic silicone scrubber gets you a meaningful fraction of the benefit for a tiny fraction of the price, so it is the wrong purchase for someone who cleanses once a day or only occasionally. The app, required to unlock some modes, is inconsistent and the least polished part of the experience. And the textured massage area on the back is a gimmick I stopped using almost immediately. None of these undercut the core cleansing-and-hygiene case, but they shape who should actually spend the money.

Who should buy the FOREO LUNA 4?

Buy it if:

• You cleanse thoroughly twice a day and want a device that amplifies your cleanser
• You want a hygienic, non-porous tool that does not need replacement heads
• You value extraordinary battery life and a long-lived device
• You will use the gentler settings if your skin is sensitive

Skip it if:

• You cleanse once a day or only occasionally and a cheap silicone scrubber suffices
• You have active rosacea, eczema, or acne that the device could aggravate
• You want a polished, reliable companion app
• You are not willing to pay a large premium over a basic scrubber

The verdict

The FOREO LUNA 4 is the best sonic cleansing device on the market, and the reasons are concrete: it genuinely improves cleansing when paired with a real cleanser, it stays hygienic in a way the old brush devices never could, and its battery life is in a class of its own. The high price versus a cheap scrubber, the inconsistent app, and the too-intense top settings are honest limits that make it overkill for casual users and delicate skin. But for someone who cleanses seriously twice a day and wants a sanitary device that lasts, this is the one to buy.