Biodot® Skin Thermometers are the original stress dots. Over 100 million of them have been sold worldwide (read about the history of Biodot® Skin Thermometers).

Biodot® Skin Thermometers are small self-adhesive, temperature sensitive discs that are placed on the skin to monitor the skin temperature.

Changes in skin temperature are due to changes in the amount of blood flowing through the skin. More blood flow - the skin is warmer; less blood flow - the skin is cooler.

When a person is tense the skin blood vessels constrict, reducing the blood flow; the Biodot will appear yellow, amber or black. When a person is calm and relaxed the skin blood vessels dilate, increasing blood flow; the Biodot will appear turquoise, blue or violet.

A colour interpretation chart is used to relate the colour of the Biodot to the level of relaxation and tension.

Biodots are particularly useful in biofeedback during relaxation training and for motivating and providing reassurance to the user that they are achieving relaxation and tension reduction.

• How to use Biodots
• Other uses for Biodots
• Frequently Asked Questions

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You can buy Biodots online from our secure store.

Biodots are manufactured to operate in two skin temperature ranges; ‘normal’ or ‘low’. We recommend the use of Normal Biodots for most situations. However, in cold conditions and for users who have cold hands most of the time, we recommend the use of Low Temperature Biodots.

Please choose the quantity of Biodots that you would like to order — you will then be able to choose ‘Normal’ or ‘Low Temperature’.

Biodots Includes one colour interpretation chart and one instruction leaflet per order.
25	£5.25
50	£9.25
100	£16.00
500	£68.00
1000	£125.00
For larger orders, please contact us as discounted rates are available.
Order extra colour interpretation charts
10	£1.50
25	£2.50
50	£4.50
100	£8.75
500	£42.00
1000	£80.00
A4 laminated chart (single)	£5.00
For larger orders, please contact us as discounted rates are available.
Order extra instruction leaflets
10	£1.00
25	£1.75
50	£2.50
100	£4.25
500	£20.00
1000	£36.00

Postage and Packing

Delivery charges are included for UK orders. For details of overseas delivery, please read our delivery terms.

Caution: Users with allergies to adhesives are advised, as a precaution, not to apply Biodots directly to their skin. Instead apply a suitable thin layer of non-allergic barrier material to the skin and place the Biodot on this material. Biodots should be used on the skin only. For external use only. Biodots are not suitable for use by young children unless they are supervised by an adult.