Consumer Products for Health and Beauty

Laser Comb -- Therapeutic Lasers

Since it was confirmed that Low Level Laser Treatment (LLLT) of live cells have a number beneficial effects, markets become crowded with a variety of products that claim to be cure for a surprisingly wide rage of medical conditions.  We do not claim to be medical experts but are familiar with biomedical methods, equipment and literature.  We did Medline publication search, and found several serious studies that confirm positive effect of red laser irradiation for two medical conditions: wound healing and hair re-growth (for certain forms of hair loss).  A long list of other diseases for which LLLT is recommended in popular literature includes Radiculitis, Osteochondrosis, Arthritis, Muscle and ligament strains, Acne,  Dermatitis, Diabetic ulcers, Herpes, Psoriasis, etc.  Please do your own Internet research on the subject before spending money on LLLT devices.  Thousands papers have been published on the scientific studies of LLLT. A good place to start may be  Do not skip this part, laser light is not a cure for every medical problem and individual response for treatment is also variable. We are in equipment manufacturing business and can't promise that your problem will be solved by our device.  We can only promise that the device you get incorporates years of our expertise in biophysics, optics and electronics.  Our philosophy for consumer products is same as for research lab equipment: make it simple, reliable and with best possible quality to price ratio.  If you are looking for fancy packaging, glossy manuals, extra red or blue LEDs with no proven health effect or nice looking digital displays with proven price increasing effect - our apology for the time you lost here.  Otherwise, Welcome to Eastern Scientific LLLT devices page.  Like all our products, LLLT devices are covered by 30 days unconditional money back guaranty and 18 month warranty on parts and labor (please visit for details on warranty and ordering).  

Laser Comb


Laser Comb photo therapy device are designed for the general public to use at home. It is  just a bit heavier than a regular hair comb.  Anodized aluminum handle contains batteries and has pushbutton switch at the end.  Comb body, machined from acrylic plastic, contain an array of defocused (for wider area coverage and safety)* red laser modules.  Ultra low-dropout CMOS voltage regulator IC is used to ensure same stable laser power up to complete batteries discharge.  It  allow usage of  any type batteries including NiCd/NiMH rechargeable.  Three AAA size elements are required.  Like a regular comb it has semi flexible bristles for better feeling compared to solid plastic rods used by some other manufacturers.  Batteries and a brief manual are included.

* Normally diode lasers produce highly collimated beam that can irritate or permanently damage eye retina in a fraction of second.  Defocusing make wider angle beam that have practically full intensity at 2-3 cm distance from the laser head but roughly 100 times lower intensity at 25 cm distance.  While it is much safer than regular laser, caution it still required.  Never point laser to your or somebody's face or to reflective surfaces. 


Part #


Number of laser modules


Peak wave length


Output power (total) ##




Total work time on one set of batteries**

~ 2 hr




18 cm (7") long, 2.5 cm (1") diameter, 1.5 cm (5/8") bristles

## - - We do not have equipment to measure laser power output but use manufacturer's provided data.

** - Estimated for average 500 mAh battery.  Depending on manufacturer, zinc/carbon or alkaline batteries have capacity in range 250-1200 mAh.





Therapeutic Lasers




Red lasers have been used for therapeutic treatments of wounds,  pain relief, certain skin conditions and other disorders (see our introduction above).  We have created a range of affordable devices, from compact, battery powered, to a versatile, table top unit.  All models are easy to use, reliable and we hope you will like them.

LT-4/LT-7 models have construction similar to a Laser Comb.  Anodized aluminum body with batteries and pushbutton switch at one end and plastic head with four/seven defocused lasers on the other end.  Both models work with AAA size batteries.  LT-4L is the basic and most affordable model for those who are not sure that laser therapy is beneficial for their conditions but wish to try it.  It is shipped with the adapter for one set of two AAA size  batteries and the adapter for 123 type lithium battery.  Three AAA batteries are required for LT-7A.  One set is sufficient for about 15-25 treatment sessions ten minutes each*.  LT-4L/LT-7L modifications are very similar but with internal circuits redesigned for use of high capacity non-rechargeable Lithium batteries.  These batteries last longer than AAA, less prone to leaks and easier to replace.  Batteries are installed and a brief manual is included.

LT-9B model uses two large capacity AA batteries. It has golden plastic head with nine defocused lasers and On/Off switch and metal handle that provide more convenience for treatment of hard to reach areas.

LT-18A is a handheld USB powered device with 18 lasers that will work with any power source that has standard USB port: desktop or notebook computers, phone chargers or power banks. It is also compatible with LIT-1220A multifunction controller. All you need is to plug it into a familiar USB port on any of your devices and it will work as long as you need. If you prefer to use it autonomously, just add AC adapter or power bank to your order.

LT-24 is an upgraded version of a popular LT-23 unit. The number of lasers increased to 24, advanced electronics keep stable output power until complete battery discharge and instead of NiMh it has integrated high capacity Li Ion battery that lasts much longer. As LT-23 it includes a miniature single laser unit (5 mW) for spot treatment of lips (herpes+), ear (tinnitus+) or other conditions that may require a compact probe to access treatment area. Charger included.

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Part #







Number of laser modules






Peak wave length

630-680 nm

650 nm

650 nm

650 nm

650 nm

Laser output power

(Max. total) ##

20 mW

35 mW

45 mW

90 mW

120 mW

Total work time on one set of batteries*

~ 5 hr

~ 2 hr

~ 4 hr

~6 hr


~ 2** hr


60 g (~ 2 oz)

90 g (~ 3 oz)

150g =~ 5 oz

140 =~ 5 oz

200 g (~ 7 oz)


10 cm (4") long, 2.5 cm (1") diameter

13 cm (5") long, 2.5-3.5 cm (1-1.25") diameter

Head: 4.5 cm (1.5") diameter

x 5 cm (1.5") height

Head+Handle: 17 cm (6.5") long

D - 6 cm, 

h- 6 cm

(2.5" x 3-1/4")

12x7x2.5 cm (4.5x2.5x1")

## - - We do not have equipment to measure laser power output but use manufacturer's provided data.

* - Estimated for an average alkaline (or Lithium) battery.  Depending on manufacturer: zinc/carbon or alkaline batteries 

have capacity range 250-1200 mAh.  123 type Lithium batteries have capacity range 1-1.6 Ah

** For freshly charged internal rechargeable battery

LT-4 model is optimized for zinc/carbon or alkaline batteries.  LT-7A has advanced voltage control circuit and work at top performance with 

any type batteries including NiCd/NiMH rechargeable  batteries.  Three elements are required. "L" modifications includes adapters for both AA and 123 type battery. 


LIT-1220A is AC powered machine that allow you to forget about batteries charging or replacement.  It is similar to earlier LIT-820 model but has more lasers, improved design and easier to operate. It consists of a table top control unit and remote head that has twelve red laser modules and quartz lamp for infra-red (IR) heat treatment.  Control unit allows an independent selection of optimal treatment parameters for IR and Laser light.  Lasers can be set to work continuously at maximum power or to pulsed mode with variable pulse frequency.  In pulsed mode, average laser power is lower than in continuous but much higher during the pulse, providing deeper penetration of light into tissue.  Pulse frequency is variable and lays within the physiologically responsive range as described in literature.  Laser light treatment can be combined with IR.  IR lamp has variable power output in continuous or in two low frequency pulsed modes.  Detachable ten-inch-long handle is included for more convenient treatment of hard to reach body parts (back, foot). Also included is a miniature single laser unit (5 mW) for spot treatment of lips (herpes+), ear (tinnitus+) or other conditions that may require a compact probe to access treatment area. In addition, recently introduced "A" modification is capable to work with optional lasers only (LT-18) or IR lamp only (IR-50) heads.  Those heads have 50% more laser power and two times more heat power compared to the standard combo head.

To see a short video demonstration please visit:


Number of laser modules

12 (Standard combo head)

Peak wave length

650 nm

Laser output power##

(Max. total)

With Standard Head - 60 mW - Continuous mode

45 mW - average, 120 mW peak in pulsed mode.

With optional LT-18 Head - 90 mW - Continuous mode; 

68 mW - average, 180 mW peak in pulsed mode.

Laser pulsed mode frequency range 6-30 Hz
IR Lamp power.

With Standard Head - 1-15 W - in Continuous mode

 1-13 W - average, 15 W peak in pulsed mode

With optional IR-50 Head - 2-30 W - in Continuous mode; 2-25 W - average, 30 W peak in pulsed mode

IR Pulsed mode frequencies  1 & 2 Hz


0.7 kg (1.5 lb)



22 cm x 20 cm x 6 cm

(9" x 8" x 2")

## - We do not have equipment to measure laser power output but use manufacturer's provided data.

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