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Cooling the skin during a laser hair removal treatment will result in: Improved results, and it makes the treatment more comfortable for the customer. Less good results, but it makes the treatment more comfortable for the customer. Decreased results, and it makes it less comfortable for the customer. Will not make a difference in results and comfort.

If, after a treatment, the hair falls out quickly (good shedding) it means that: You probably will have to do more treatments for final results. You probably will have to do fewer treatments for final results. Shedding is not an indication of the number of treatments required. All the hairs will be permanently removed.

Many modern hair removal lasers have preset settings where you choose the skin type and color of the hair, and the device then automatically determines the settings. Which of the following statements is incorrect? These are always the most optimal settings and you must adhere to them. The settings chosen by the device are often on the conservative side and therefore often lead to results that are not optimal. These settings are a good starting point, but for the best results you need to choose the settings that result in the correct reaction of the skin (end point detection) With the automatic settings it is not necessary to do a test spot before you start the actual treatment.

When you do a laser treatment for permanent hair removal, You want to use a pulse duration that is as short as possible. Get the best results with a Q-switch laser The used pulse duration matters little. You want to use as long a pulse duration as possible.

The least effective way to cool the skin during treatment is with: Cold air cooling Contact cooling Use of special cooling gel Ice packs

The depth of penetration of the light is determined by: The wavelength. An ND: YAG laser at 1064 nm will always have a deeper penetration than an Alexandrite laser at 755 nm. A combination of parameters. It is possible that an Alexandrite laser at 755 nm has a deeper penetration depth than an ND: YAG laser at 1064 nm. The spot size. Thus, a larger spot size will always increase the penetration depth, regardless of the wavelength used or other parameters. The pulse duration: a longer pulse results in a deeper penetration.

When you choose a laser for permanent hair removal and your main goal is to be able to achieve good definitive results, within as few treatments as possible, you choose a device with a: High power (W), the energy (J) per pulse is of less importance. High energy (J), the power (W) is less important. High energy density (J / cm2), the power (W) is less important. High frequency, the energy density (J / cm2) is less important.

Which adjustment of the treatment parameters gives better results? You keep the power (W), but use a smaller spot. You maintain the power, but shorten the pulse duration. You keep the total energy per pulse (J) and you extend the pulse duration. You maintain energy density and use a larger spot.

When you replace a filter on your IPL device with a range of 515 nm to 1200 nm with one with a range of 580 nm to 1200 nm: You increase the total energy that reaches the skin. You reduce the total energy that reaches the skin. You reduce the energy absorbed by melanin, but the total energy that reaches the skin remains constant. You increase the chance of skin damage and the results are less good.

Cooling gels have the following effect on the light from a laser or IPL: None. Concentrates energy and improves results. Reflects and refracts energy and reduces results. Facilitates sliding of the handpiece and improves results.

The thermal relaxation time of the human hair varies between 10 ms and 100 ms. To achieve the best possible hair removal results, the pulse length should be: Less than 10 ms. More than 10 ms, but less than 100 ms. Longer than 100 ms. Pulse length does not matter.

The wavelengths used for permanent hair removal are between 650 nm and 1200 nm. This range of wavelengths: Does not cause cancer because it is ionizing radiation. Could cause cancer because it is ionizing radiation. Can cause cancer, but only during pregnancy. Does not cause cancer because it is not ionizing radiation.

Which Fitzpatrick skin type is a skin that tans well in the sun, but still sometimes burns (typical a persons with a light olive-colored skin, dark brown hair, green eyes). Fitzpatrick type 1. Fitzpatrick type 2. Fitzpatrick type 3. Fitzpatrick type 4. Fitzpatrick type 5. Fitzpatrick type 6.

An IPL: Is safer for the skin and gives at least as good results than a laser for permanent hair removal. Is safer for the skin but gives less good results than a laser for permanent hair removal. Is less safe for the skin and gives less good results than a laser for permanent hair removal. Is less safe for the skin but gives better results than a laser for permanent hair removal.

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Laser hair removal quiz

Take this quiz to evaluate your knowledge of laser hair removal.

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