Laser and the Dubai sun: when to start

Why the sun matters for laser and light

Laser hair removal and broadband light work by aiming energy at colour: the dark pigment in a hair or a sun spot, or the red of blood in a small vessel. The light is absorbed there, turns to heat and disables or clears its target. But the skin's own pigment, melanin, sits in the surface layer the light passes through, and it absorbs part of the energy too.

A tan adds melanin to that surface layer, so more of the energy is taken up where it isn't wanted. That raises the risk of burns and blisters, and of patches that turn darker or lighter afterwards. Recent sun raises the risk, and so does sun in the weeks after a session, while the skin settles.

Deeper skin tones start with more melanin, so the margin is narrower, and they are more prone to post-inflammatory hyperpigmentation: dark marks that follow heat, irritation or injury to the skin. A previous tan makes them more likely. None of this rules out laser or light on darker skin; it means matching the treatment, the wavelength, the settings and the timing to the skin.

How strong the sun is in Dubai, month by month

• December and January: a midday UV index of about 5, moderate
• November and February: about 6 to 7, high
• October, March and September: about 8 to 10, very high
• April to August: about 11 to 12, extreme

These are satellite-based estimates for Dubai of the UV index at midday on a clear day, averaged over 2016 to 2025. The UV index measures how strongly the sun's ultraviolet rays act on skin. The World Health Organization's guide says protection is needed from 3, more so from 8, and calls 11 and above extreme.

So winter in Dubai is not sun-free. On clear days the UV index stays above 3 all year; from November to February it is roughly half as strong as in summer, and at any time of year it peaks in the hours around midday.

Planning a course around the calendar

Laser hair removal takes a course because hair grows in cycles: usually six to eight sessions, four to six weeks apart on the face and six to eight on the body, so a full course runs from six months to a year. Starting in October or November puts the first sessions in the months when the sun is weakest and gives a summer tan time to fade. The later sessions will usually fall in spring or summer, so plan for them too: keep treated areas covered and protected, and keep the sessions at their intervals rather than squeezing them in before the heat. If strict protection isn't realistic for an area in summer, we pause and pick up again later.

Pigmentation courses are shorter: usually three to five sessions of BBL HEROic, three to four weeks apart; two to four of MOXI, a few weeks apart; or three to five of Sylfirm X, about four weeks apart. Started in autumn, they can usually finish within the cooler months, which helps, because pigment tends to creep back over a summer. Waiting for winter helps but isn't essential: treatment can go ahead in summer with strict sun protection and no tanning around each session.

A few things move a session. If you are back from a summer away with a tan, we wait for it to fade or, for laser hair removal, adjust the settings. A beach holiday or desert trip just before or after a session is a reason to move it. Self-tan counts as a tan, so skip it during a laser hair removal course. And the cooler months are the season for beach days and outdoor sport, so the lower UV helps only if treated skin stays protected.

Which treatments mind the sun more

• MOXI works on the water in skin cells rather than on pigment, which is why it suits all skin tones, and its maker describes it as an option at any time of year. Its aftercare still asks for a month of hats or covering clothes outdoors and three months of daily sunscreen, and on deeper skin or with melasma it is set carefully, because heat can occasionally provoke pigment.
• Sylfirm X delivers radiofrequency through fine needles beneath the surface instead of targeting pigment, so it suits all skin tones year-round. What matters is avoiding sunburn, tanning and heavy sun in the weeks around each session, with SPF 50 every day.
• BBL HEROic is broadband light absorbed by pigment and blood, so it needs more care. A fresh tan means we wait; deeper skin tones are assessed first, and another treatment may suit them better; and treated skin stays out of long sun before each session and for two weeks after.
• excel HR aims at the pigment in the hair. Its 1064 nm wavelength is far less absorbed by skin pigment, which is why it can be used on darker and tanned skin, but a tan still raises the risk of burns and pigment changes. We wait for a tan to fade or adjust the settings, and ask for strict sun protection for four weeks before and after each session.

In short, the treatments that don't target pigment, MOXI and Sylfirm X, are more forgiving of the season, and the ones that do, BBL HEROic and excel HR, ask for more planning. Whichever you choose, tell us about recent sun at every visit: a fresh tan or a sunburn can mean waiting.

Melasma, visible light and heat

Melasma behaves differently from sun spots. Sun is its main outside trigger, hormones and skin inflammation (including from cosmetic procedures) play a part, and on medium and darker skin visible light can deepen it, not only UV. Heat may matter as well: one survey linked more severe melasma with heat at work.

That is why light and laser need a gentle hand with melasma: strong settings, or anything that inflames the skin, can leave it darker, and pigment often returns after a course. Here, Sylfirm X is usually the doctor's choice for melasma, BBL HEROic and MOXI are used carefully and only on the physician's judgment, and saunas, steam and hot yoga stay away from the days around each session. Melasma is long-term: treatment can lighten it and keep it in check, but sun, heat and hormonal change tend to bring it back, so daily protection matters as much as any session.

What sun protection means in practice

• Broad-spectrum sunscreen of SPF 30 or more on all exposed skin, every day of the year, cloudy days included; SPF 50 in the weeks around laser hair removal or Sylfirm X.
• Apply it about 15 minutes before going out, reapply at least every two hours and after swimming or sweating, and choose a water-resistant one.
• Shade, clothing and a wide-brimmed hat do much of the work; sunscreen covers the skin that stays exposed.
• Plan outdoor time away from the hours around midday.
• For melasma, a tinted sunscreen with iron oxides, which also helps block visible light.
• No sunbeds, and no self-tan during a laser hair removal course.

Sunscreen is not a reason to stay out longer: the WHO's guide says it should never be used to prolong time in the sun, and no sunscreen blocks all of the light that darkens pigment.

When to wait, or see a doctor first

A sunburn on the area means the session waits. A mole or spot that is new, changing in size, shape or colour, uneven in colour, irregular at the edge, itching or bleeding should be checked by a doctor first, because these can be warning signs of melanoma, a skin cancer; we keep clear of any mole that needs checking.

Tell us about every medicine you take. Some, such as certain antibiotics and heart medicines, make skin more sensitive to light, which can mean waiting or adjusting the settings. Don't stop a prescribed medicine to fit a session; talk to the doctor who prescribed it first. Pregnancy and breastfeeding also mean waiting, with sun protection carrying the plan in the meantime.