If you need a replacement part for your heat it®, please follow these steps:

1. Plug your heat it® into your smartphone and open the heat it® app.
2. Click on the "Contact" tab in the lower area. There you can start the help section.
3. Fill out the query with the information you have.
4. We will take care to deliver your spare part as quickly as possible.

We are sorry that your heat it® is not working as it should. Before contacting us, we recommend checking the following:

- Carefully clean the charging socket (e.g. with a toothpick)
- Install the latest app version
- Enable OTG (only for isolated Android smartphones from e.g. OnePlus, OPPO or VIVO)

Your problem still persists? Then contact our support team via the help section integrated in the app.

1. Plug your heat it® into your smartphone and open the heat it® app.
2. Click on the "Contact" tab in the lower area. There you can start the help section.
3. Fill out the query to the best of your ability and submit it. Please make sure to describe your request as best as possible.

It's a pity that we couldn't convince you and you want to return your heat it®.

For a refund, simply return your heat it® to us within the 100-day  return period . If there is a defect or something similar in the first 2 years after purchase, we will cover the shipping costs or send you a replacement product (Just heat it® Guarantee). In this case, contact us via the contact form.

Kamedi GmbH
Return
Haid-und-Neu-Strasse 7
76131 Karlsruhe
Germany

Please include a note with your return with your name, email address and order number. Alternatively, you can print out and fill out the withdrawal form.

With the extended right of return of 100 days, you can put heat it® through its paces without risk. heat it® should be your reliable companion in every situation in life. However, if a defect should occur, our 2-year guarantee applies in addition to the statutory warranty.

We ship all orders ourselves from our warehouse. The delivery takes place from Monday to Saturday with our shipping partners. When you complete your order, you will be shown in which time frame your package is expected to arrive.

Processing time until shipment:
Please allow us some time to prepare your order for shipment. We usually ship orders no later than the following morning (on working days). If the order volume is very high, it may take a little longer.

Order does not arrive:
Please check the tracking to see if the package was dropped off at a neighbor's house or a store. If this is not the case or the shipping status has not changed for 3 days, please contact us via our contact form.

heat it® for Android is compatible with Android smartphones with a USB-C port. The "OTG" function has to be enabled manually on isolated smartphones from e.g. OnePlus, OPPO or VIVO (explanatory video).

Older smartphones with a Micro-USB port must support the OTG standard and require an adapter.

Unfortunately, the following Micro-USB smartphones are not compatible:
- Huawei P9 lite
- Samsung Galaxy A5
- Samsung Galaxy A6
- Samsung Galaxy A7
- Samsung Galaxy A10
- Samsung Galaxy J5
- Samsung Galaxy J530
- Samsung Galaxy S5 neo
- Samsung Galaxy S5 mini
- Cubot Note S

heat it® for iPhone 6s - 14 has a Lightning connector. The Apple MFi certification guarantees the best functionality and maximum safety.

The iPhone 15 & 16 are equipped with a USB-C connection. For technical reasons, a heat it® with Lightning connection cannot be operated with an adapter on an iPhone 15 or 16.

heat it® for iPhone 15 & 16 models (also Plus, Pro and Pro Max) has a USB-C connection and is also compatible with Android smartphones. The Apple MFi certification guarantees the best functionality and maximum security.

Note: For technical reasons, this heat it® variant cannot be operated via an adapter on an iPhone 6s to 14.

heat it® and the associated app were developed specifically for smartphones and are not optimised for tablets. In addition, the application is much easier and handier with a smartphone.

heat it® for Android can nevertheless be operated on an Android tablet.

For technical and regulatory reasons, heat it® cannot be used on an iPad (Lightning or USB-C connection).

We follow the specifications of the smartphone manufacturers regarding free space around the charging port. Almost all manufacturers of smartphone cases also do this and the heat it® can be inserted into the smartphone with a case without any problems. The rare exception are extremely massive outdoor cases.

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heat it® can be used for insect bites caused by e.g. mosquitoes, horseflies, bees and wasps. The best result is achieved when you apply the heat it® immediately after the insect bite. With immediate use, you can often prevent the symptoms completely, but even with later use, the symptoms can subside faster.

Depending on the setting, the treatment temperature of the heat it® is 47 °C to a maximum of 52 °C. In the "Adult" setting, the heating plate heats up to a maximum of 52 °C. In the "Child" setting to a maximum of 49 °C. If you activate "sensitive skin", the temperature will be reduced by about 2 °C.

You can choose between 4, 7 or 9 seconds of treatment duration (short, medium, long).

Whether the application is perceived as painful depends on the user. It may happen that the treatment is perceived as unpleasant. Since the temperature sensitivity of the skin varies depending on the person and body part, the heat it® offers various settings for optimised treatment. For safe and effective use, please note the following:

Only mild heat pain is required for treatment success. In case of severe pain, the treatment must be stopped immediately. For first-time use, the settings "short", "child" and "sensitive skin area" should be selected. The same applies to the treatment of areas of the body that have not yet been tested. If the treatment is not successful, the treatment can be repeated after a waiting time of 2 minutes with adjusted settings. Please observe the detailed information in the instructions for use.

heat it® can be used on children from the age of 3. heat it® can be used independently from the age of 12.

heat it® must not be pressed on the skin for more than 10 seconds during the heating process. Do not treat the same area of skin more than five times per hour. There must be a break of at least 2 minutes between multiple treatments on the same area of skin. Excessive use may cause skin lesions or permanent skin discoloration (caloric hyperpigmentation).

heat it® is intended for use on external skin only. Do not use in body orifices, on mucous membranes, gums, nail beds, eyes or external ear canals.

When first used, the settings "short", "child" and "sensitive skin" must be selected. The same applies when treating parts of the body that have not yet been tested.

When treating a bee sting, the stinger must be removed first. heat it® is not suitable for treating allergic reactions or tick bites.

Longer treatment times ("medium" and "long") and higher temperatures ("adult" and "non-sensitive skin area") can cause skin irritation in sensitive persons and on sensitive skin areas (e.g. inside the arm, Achilles heel)! Do not use these settings if you are unsure or if you are using it for the first time. The instructions for use must be observed. Improper use may result in minor burns.

Up to 1,000 treatments at the highest level are possible with a full smartphone battery. That's enough for you, your family and friends.

The principle of hyperthermia for the treatment of itching and pain is based on a brief heating of the skin to which the nerves respond. Current research suggests that this reduces the transmission of the stimulus. As a result, the itch signal can no longer be properly transmitted and the need to scratch disappears. To achieve this itch-relieving effect on the skin nerves, a short period of heat pain is necessary.

In June 2023, we published our first study on the principle (abstract).

"New study proves effective and safe relief of itching and pain after insect bites by heat-based sting healers"

The itching caused by a mosquito bite is a body reaction to the mosquito's saliva, which is injected during the biting process. Our immune system defends itself against the foreign saliva by releasing histamine. As a result, the blood vessels dilate, the bite swells and begins to itch. By heating the affected skin area with heat it®, various endogenous reactions are induced that can relieve itching and pain.