Professional cleaning of your diode laser: how to do it correctly and comply with health regulations

Jan 19, 2026 | english

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“description”: “How to clean your diode laser correctly and comply with health regulations”,
“image”: “https://milesman.com/wp-content/uploads/2026/01/3.png”,
“totalTime”: “PT30M”,
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“name”: “Use 70% or 80% ethyl alcohol”
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“step”: [{
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“text”: “Before you start, create a safe environment for yourself and the device. Switch off the device and unplug it from the mains. Put on latex or nitrile gloves to avoid transferring dirt or oils. Avoid corrosive or abrasive liquids that could damage delicate components.”,
“name”: “Preparation: safety first”
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“@type”: “HowToStep”,
“text”: “For the external surfaces and the screen, follow these guidelines. Use a soft microfibre cloth lightly dampened with a mild agent. Wipe the housing gently, preventing liquid from entering slots or ports. Do not spray, spill or wet the handpiece, the central unit or the touchscreen with liquid. Do not rub hard, to avoid scratching. Do not use grease, gel or abrasive cleaners on the screen.”,
“name”: “Cleaning the external surfaces and screen”
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“@type”: “HowToStep”,
“text”: “The lenses and the sapphire tip of the handpiece must be treated with the utmost care. A build-up of residue could cause overheating and prevent the laser light from penetrating correctly.
Specific protocol for the sapphire tip:
Never apply alcohol directly onto the handpiece. Apply a small amount of 70% or 80% ethyl alcohol to a clean cloth and use it to clean the tip only. Once the residue has been removed, dry the handpiece with another clean cloth. Wait at least one minute for the remaining alcohol to evaporate. No visible residue should remain. Carry out a final visual inspection.”,
“name”: “Cleaning the lenses and heads: the heart of the laser”
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“@type”: “HowToStep”,
“text”: “The user may only carry out the frequent, routine cleaning of the handpiece tip and the touchscreen. Consult the user manual for internal technical maintenance guidelines. Avoid opening the device unless you are a certified technician. Opening the housings can result in exposure to optical radiation and dangerous voltages, damage and loss of the warranty. Clean the external surfaces and lenses daily. For deep maintenance, it is advisable to have the complete device inspected once a year by an authorised professional.”,
“name”: “Routine maintenance and the limits of the user”
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“text”: “Cleaning is part of a culture of professional quality and safety. A well-cleaned device lasts longer and delivers safer, more precise treatments. European and Spanish regulations require these devices to meet safety and performance requirements. Proper cleaning and maintenance, following the manufacturer’s instructions, protect your investment and form part of compliance with standards designed to reduce risks. Respecting the boundaries between the user’s external cleaning and the technician’s internal intervention is the guarantee of safety, optimal performance and the validity of the warranty.”,
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When you acquire a laser device for your centre, one of the questions you ask us most often is: How should I clean it so that it works well and is safe? Keeping your diode laser in perfect condition not only extends its service life and performance, but is also part of a professional approach that meets the current health and technical regulations. Below we explain a clear and safe protocol, designed for aesthetic devices such as milesman lasers.

1. Preparation: safety first

Before you start, create a safe environment for yourself and the device:
Switch off the device and unplug it from the mains. Put on latex or nitrile gloves to avoid transferring dirt or oils. Avoid corrosive or abrasive liquids that could damage delicate components.

 

2. Cleaning the external surfaces and screen

For the external surfaces and the screen, follow these guidelines:
Use a soft microfibre cloth lightly dampened with Sanytol.Wipe the housing gently, preventing liquid from entering slots or ports.Nor should any liquid or cleaning product be sprayed, spilled or applied to the handpiece, the central unit or the touchscreen, as this could damage the device.Do not rub hard, to avoid scratching the screen or the housing. Please also note that using grease or gel on the screen may cause the touch function to fail. Do not use abrasive cleaners or products.

 

3. Cleaning the lenses and heads: the heart of the laser (with a specific protocol for the sapphire tip)

The lenses and, critically, the sapphire tip of the handpiece must be treated with the utmost care. A build-up of residue here could cause overheating and prevent the laser light from penetrating correctly. Specific protocol for the sapphire tip (between sessions and clients):

 

  • Never apply the alcohol directly onto the handpiece. Instead, apply a small amount to a clean cloth and use it to clean the tip of the handpiece only.
  • Use 70% or 80% ethyl alcohol on the cloth to disinfect and remove carbonised residue.
  • Once the residue has been removed, dry the handpiece with another clean cloth. After drying, allow at least another minute for the remaining alcohol to evaporate. No visible residue should remain.
  • Carry out a final visual inspection. If any dirt remains, repeat the process.

 

4. Routine maintenance and the limits of the user

The user of the device… may only carry out a single maintenance operation, which is the frequent, routine cleaning of the handpiece tip and the touchscreen.Consult our user manual for internal technical maintenance guidelines.Avoid opening the device unless you are a certified technician: The external housings… must remain untouched; opening any of them can result in… exposure to optical radiation and dangerous electrical voltages, even once the laser has been switched off, damage… and the possibility of losing the warranty.Clean the external surfaces and lenses daily. For deep maintenance, it is advisable to have the complete device inspected and checked once a year… This task can be performed by an authorised professional from our technical service at milesman.
Professional tip: A well-cleaned device not only lasts longer, but also delivers safer, more precise treatments, reducing the risk of thermal injuries.
A practical example from the manual: “If the device does not fire as powerfully as it should… meticulously clean the handpiece tip.” Many “faults” are resolved with correct cleaning.

 

5. Did you know that there are also health and regulatory rules that support these good practices?

Although aesthetic lasers such as diode lasers are not always considered traditional “medical devices”, European and Spanish regulations do require them to meet safety, performance and quality requirements before being marketed and used professionally. In Europe, Regulation (EU) 2017/745 on medical devices governs equipment that emits high-intensity electromagnetic radiation (such as diode lasers or IPL) intended for use on the human body – including aesthetic treatments such as hair removal or tattoo removal – and requires them to perform according to safety and performance criteria. In Spain, these devices must meet the technological safety and quality requirements arising from that regulation, and be accompanied by the appropriate technical documentation for their marketing and safe professional use.This means that proper cleaning and maintenance – strictly following the manufacturer’s instructions such as those described here – not only protect your investment, but form part of compliance with standards that aim to reduce risks for your clients and for your professional practice.
Conclusion

 

Cleaning is not an optional extra: it is part of a culture of professional quality and safety in advanced aesthetics. Not only do you keep the device like new, but you also act in line with current safety expectations, backed by technical and health regulations. Scrupulously respecting the boundaries between what the user can do (external cleaning) and what the authorised technician must do (any internal intervention) is the ultimate guarantee of safety, optimal performance and the validity of your laser device’s warranty.
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