FOREO Luna 4 Review: Is It Worth the Upgrade? (2025)

Overall Rating: 4.7 / 5

The FOREO LUNA™ 4 is one of the most refined silicone facial cleansing brushes on the market. It is not a miracle device — cleansing brushes rarely are — but it delivers a genuinely thorough, hygienic and skin-friendly daily cleanse that pairs beautifully with a modern anti-aging routine.

The FOREO LUNA™ 4 is the fourth generation of FOREO's flagship silicone facial cleansing brush. It replaces bristles with soft, medical-grade silicone touchpoints and uses T-Sonic™ pulsations — low-frequency sonic vibrations — to loosen makeup, sunscreen, sebum and daily pollution from the surface of the skin and from the mouth of the pore.

The device is designed to be used twice daily with your regular cleanser and, on the reverse side, offers a dedicated firming face-massage mode intended to stimulate the skin and prep it for the rest of your routine.

T-Sonic™ (transdermal sonic) technology delivers thousands of gentle pulsations per minute through the silicone touchpoints. Rather than scrubbing the skin, these pulsations work with your cleanser to lift debris out of the pore mouth while the ultra-soft silicone glides across the face.

Compared with rotating nylon bristles, silicone has three practical advantages that dermatologists frequently highlight:

• Hygiene. Silicone is non-porous, so it harbors far fewer bacteria than traditional bristles.
• Gentleness. The soft touchpoints are less likely to over-exfoliate or disrupt the skin barrier when used daily.
• Longevity. There are no brush heads to replace — the silicone surface is designed to last for the life of the device.

Expert tip: T-Sonic™ is not exfoliation. It is a mechanical assist to your cleanser. Keep chemical exfoliants like AHAs and BHAs in a separate step, 2–3 nights per week, on clean, dry skin.

• 16 adjustable T-Sonic™ intensities
• Skin-type specific silicone touchpoints (Sensitive, Normal, Combination)
• Dedicated firming face-massage mode on the reverse
• USB-C rechargeable with month-long battery life
• 100% waterproof for use in the shower
• Optional FOREO app with guided cleansing and massage routines
• Ergonomic, one-handed grip

Aesthetically, LUNA 4 is unmistakably FOREO — a smooth, seamless silicone shell in a rounded, palm-sized form. The build feels dense and considered rather than plastic-light. A single button on the front controls power, intensity and mode selection, and there are no removable parts to dry, replace or lose.

The reverse side houses the firming massage nodes, which are shaped differently from the cleansing touchpoints and are intended for use post-serum. The whole device is rated fully waterproof, so it is designed for the shower and rinses clean under the tap in seconds.

Cleansing is where LUNA 4 earns its price. After a standard oil or gel cleanse, the T-Sonic™ pulsations noticeably improve how residue- free the skin feels — particularly around the nose, hairline and jaw, where sunscreen and makeup tend to linger. Skin is left soft rather than tight.

Because the touchpoints are silicone rather than bristles, it does not exfoliate in the traditional sense. Do not expect it to physically buff away dead skin the way a scrub or a rotating brush would. What it does well is a clean, comfortable, evenly-distributed daily wash that respects the skin barrier.

Expert tip: Wet your face, apply your cleanser directly to the silicone touchpoints, then work in small circles for about a minute. Rinse the device and your face with lukewarm water.

Realistically, a cleansing brush is a supporting act — the leading roles in visible anti-aging belong to sunscreen, retinoids, vitamin C and, for many readers, professional treatments. What LUNA 4 contributes is a better base for that routine:

• Deeper daily clean. Less residual sunscreen, makeup and sebum left behind.
• Smoother texture over time. With consistent use, skin often looks and feels more even, though this is largely a product of thorough, gentle cleansing rather than exfoliation.
• Improved product absorption. Serums and treatments applied to properly cleansed skin tend to perform closer to their potential.
• Gentle circulation boost. The reverse-side massage mode encourages a fresh, temporarily firmer-looking finish.

Results build with weeks and months of consistent use, not days. If you are looking for dramatic overnight change, no cleansing device is going to deliver it.

Day-to-day, LUNA 4 is refreshingly simple. One button. One texture against the skin. A short beep when your one-minute cleanse is done. It is quiet enough for shared bathrooms and small enough to travel with. The lack of brush heads to replace is a genuine long-term convenience.

For readers who enjoy tracking their routine, the optional FOREO app adds guided cleansing programs, technique tips and personalized skin insights. It is a nice addition rather than a requirement — the device works perfectly well on its own.

Battery life is one of LUNA 4's quiet strengths. A full USB-C charge typically lasts around a month of twice-daily use, which places it comfortably ahead of most electric cleansing tools in this category. In practice, most users charge it once and then largely forget about it until the low-battery indicator eventually appears.

The FOREO app connects to LUNA 4 over Bluetooth and offers:

• Guided cleansing routines with real-time coaching
• Firming face-massage tutorials
• Personalized recommendations based on your skin concerns
• Progress tracking across sessions

It is worth setting up once, particularly in the first few weeks, to calibrate your technique. Longer term, most people gravitate toward using the device in a standard one-minute cycle without opening the app every session.

• Genuinely thorough daily cleanse without over-exfoliating
• Ultra-hygienic silicone with no brush heads to replace
• Long battery life on USB-C
• Skin-type specific variants (Sensitive, Normal, Combination)
• Elegant, durable design that feels premium in the hand
• Complements — rather than competes with — actives and devices

• Higher upfront cost than basic silicone brushes
• Not an exfoliator — will not replace chemical exfoliation
• App is optional but underused by most owners over time
• Improvements are gradual, not overnight

• Anyone who wears daily SPF, makeup or heavy skincare and wants a more thorough evening cleanse.
• Readers building a serious anti-aging routine who want a hygienic, skin-friendly first step.
• Users of retinoids or acids who need a gentle cleansing tool that will not aggravate an already active routine.
• People who dislike the maintenance and hygiene issues of traditional bristled cleansing brushes.

• Anyone expecting an at-home microdermabrasion or peel-level result. A silicone brush is not that device.
• Readers on a strict budget who already have a considered cleanser and a good routine — a basic double cleanse will still take you most of the way.
• Very reactive skin during an active flare (rosacea, dermatitis, post-procedure) — pause any facial device and consult a professional.

On a pure cost-per-use basis, LUNA 4 is easier to justify than most premium beauty tech. There are no replacement heads, the battery lasts weeks per charge, and the device is designed to last for years. Spread across daily use, it typically costs a small fraction of a single facial per month.

The question is not really whether LUNA 4 is well-made — it clearly is — but whether a premium cleansing tool fits your priorities. If your routine is already anchored by SPF, actives and a device or two, LUNA 4 is a natural, low-risk addition. If your routine is still being built, a strong sunscreen and a retinol are usually the higher-impact places to spend first.

One of the most common questions from long-time FOREO readers is whether the Luna 4 is a meaningful upgrade over the Luna 3 or the original Luna Mini. In short: the core cleansing action is similar, but the fourth generation refines nearly every practical detail — ergonomics, intensity range, charging, and the reverse-side firming massage mode.

If you are on a Luna Mini 3 that still works well, the upgrade to Luna 4 is a quality-of-life improvement rather than a necessity. Coming from the Luna 3, the jump is smaller — think refinement, not reinvention. For readers new to the range, the Luna 4 is the model we recommend.

Expert tip: If your existing Luna is more than three to four years old, or if the silicone shows visible wear, the Luna 4 is a sensible upgrade — both for hygiene and for the improved firming massage mode.

Compared with rotating nylon-bristle brushes and simpler silicone alternatives, the FOREO LUNA™ 4 sits at the top of the category on hygiene, longevity and skin comfort.

Expert tip: If you are already using a microcurrent or LED device, prioritize a gentle daily cleansing tool over another exfoliating one. LUNA 4 is designed to sit comfortably alongside BEAR™ 2 and FAQ™ 202 in the same routine.

The FOREO LUNA™ 4 is the most refined silicone cleansing brush FOREO has released to date. It does one job — a thorough, hygienic, skin- friendly daily cleanse — and it does it exceptionally well. Paired with a considered skincare routine, it earns its place on the bathroom shelf.

It is not going to replace sunscreen, retinol or a proper anti-aging device. But as the first step of a serious routine, it is quietly one of the best-designed tools in its category.

Overall Rating: ★★★★★ (4.7 / 5)