Resty MARS Laser Cap seen from below: black fabric cap with laser diodes inside the inner dome

Resty MARS Laser Cap from below, switched on: a real photo of the laser dome with its 272 laser diodes lit red. 660 nm red light, 5 mW per diode (specified values). Fabric cap with the laser dome inside; the light-grey cable runs to the power bank.

Close-up of the laser dome of the Resty MARS Laser Cap with the diodes off: a real photo of the laser diodes in their metal housings on the copper-coloured circuit board. Laser diodes, not LEDs: a laser emits a narrow, directional beam, while an LED emits wider, diffuse light. A technical distinction.

Scene created with AI: a woman sits in a wooden armchair at home in front of a window with sheer white curtains, reading a book. She wears the Resty MARS Laser Cap, a black fabric cap with a brim; the laser dome sits inside. A thin light-grey cable runs from the back edge of the cap behind her shoulder and over the back of the armchair to the power bank on the round side table next to it.

In the box: the Resty MARS Laser Cap, a 10,000 mAh power bank, 2 USB cables, a carry case and a user manual. Real photos of the cap and the black zip carry case.

How the Resty MARS Laser Cap starts: plug in the power bank, put the cap on and it starts by itself via a head sensor. 30-minute timer. Real photo of the back edge with the cable connection and the light-grey cable to the power bank.

The Resty MARS Laser Cap fits a head circumference of 58–61 cm; measure your head first. Net weight 222 g. Real photo: fabric cap with a brim and the laser dome inside; the dashed line follows the edge of the opening.

Scene created with AI: a man stands at the kitchen worktop by a large window making pour-over coffee, wearing the Resty MARS Laser Cap. A thin light-grey cable runs from the back edge of the cap straight down his back to the power bank in his back pocket: no wall socket needed during use, hands-free.

Resty MARS Laser Cap

Name: Resty MARS Laser Cap
Brand: Resty
SKU: RE250901
Price: 799.00 EUR
Availability: InStock

272 × 660 nm in a lightweight 222 g cap with a 30-minute timer.

€799

€1.499

You save €700 (46%)

4.4 on Trustpilot · 99 reviews

Hands-free scalp coverage with 272 660 nm laser diodes
Lightweight 222 g fabric cap for a 58–61 cm fit
30-minute timer keeps every session clearly defined
Includes a 10,000 mAh power bank and two USB cables

3 payments of €266,33 at 0% interest with Klarna

Free shipping Tracked delivery · 1–2 business days

Dutch company · Ships from within the EU 60 days to try it Try it at home and request a return within 60 days of delivery. For trial returns, you pay return shipping.

Resty MARS Laser Cap

€799

€1.499

€799

€1.499

Resty MARS Laser Cap worn during a quiet routine at home

Built for a routine you can repeat

MARS distributes 272 660 nm laser diodes across the inside of a wearable fabric cap.

At 222 g and with a stated 58–61 cm fit, the hardware stays compact while a 30-minute timer gives each session a clear beginning and end.

Measure your head circumference before ordering.

Three steps. Thirty minutes.

1. Measure first: the stated fit range is 58–61 cm
2. Connect power: connect the included 10,000 mAh power bank using one of the supplied USB cables
3. Settle in: the built-in timer gives the session a clear 30-minute frame

Lit 660 nm laser array inside the Resty MARS Laser Cap

Laser diodes, not a blanket of glow.

Both lasers and LEDs can emit red light. The physical delivery differs: laser diodes create narrow, directional beams, while LEDs generally spread non-coherent light more widely. MARS uses 272 laser diodes across the cap.

That is an engineering choice, not proof that every laser device outperforms every LED device.

Research, with the fine print in full view.

Red-light devices around 630–660 nm have been studied in randomized, sham-controlled trials for pattern hair loss. In one 24-week trial, a different helmet used 224 laser diodes at 660 ± 10 nm and 5 mW per diode and reported a greater increase in hair density than sham.

That protocol and those findings belong to the study device, not to MARS. Geometry, dose, session length and safety documentation all matter. A systematic review also found meaningful variation between products and study designs.

Read the 24-week randomized trial
Read the systematic review

Exact specifications

Laser diodes: 272
Wavelength: 660 nm
Specified laser power: 5 mW per diode
Dimensions: 340 × 265 × 145 mm
Net weight: 222 g
Shell: fabric
Head circumference: 58–61 cm
Timer: 30 minutes
Input: 100–240 V AC
Included power bank: 10,000 mAh

Resty MARS Laser Cap

What is different about laser light and LED light?

Laser diodes create a narrower, more directional beam. LEDs generally spread non-coherent light more widely. That is a technical distinction, not a promise of better performance.

How many laser diodes are inside the cap?

MARS is specified with 272 laser diodes at 660 nm and 5 mW per diode.

How long does the timer run?

The specified timer duration is 30 minutes.

What head circumference does it fit?

The stated fit range is 58–61 cm. Measure before ordering.

How much does the cap weigh?

The net weight is 222 g.

What are the dimensions?

The stated dimensions are 340 × 265 × 145 mm.

What input voltage does it use?

The specified input is 100–240 V AC.

Is a power bank included?

Yes. The set includes a 10,000 mAh power bank and two USB cables for use away from a wall socket.

Question not answered here? Send a message We typically respond within 24 hours.

Guides on this topic

How to Use a Laser Cap: A Practical 30-Minute RoutineLearn how to set up, wear and track a laser-cap routine without borrowing the wrong session schedule from a...

All guides

Returns and support

60 days to try it

Try it at home and request a return within 60 days of delivery. For trial returns, you pay return shipping.
Read return conditions
Arrived damaged?

Contact us as soon as possible with your order number and, if helpful, photos. We'll assess the issue and arrange a suitable solution.
Get help with your order

Use and safety

MARS is a laser product. Do not look directly into illuminated laser diodes.

Use only with the final product-specific instructions and compatible power equipment.

Stop use if the cap, cable or power equipment is damaged.

Resty MARS Laser Cap