Keeping the patches dry is the most important aspect of accurate patch testing. Water or moisture of any description will often cause the allergens to dissolve out of their chambers and often make results difficult to interpret. For the whole 4 to 5-day testing period whilst the patch tests and ink markings are on your skin: Don’t: Get the patches or markings wet in the bath or shower Work up a sweat by exercising too hard Go swimming Wear pale or valuable clothing as the ink may stain it Expose yourself to sunlight Take immunosuppressive medications (If you already taking these, patch testing is not likely possible as the results will be suppressed) If the area becomes itchy, try not to scratch. Do: Use the shower cautiously and attempt to sponge wash yourself whilst keeping the patches/markings out of the water flow Shower on the morning before your patch test (as you won’t be able to have a proper shower for at least a further 96 hours) Enjoy a holiday from exercise or sport that causes you to sweat If you notice a patch coming away, try to tape it down yourself Contact the clinic if you have questions or concerns Remember, these restrictions and recommendations need to cover the entire period from the first visit right through to the last, or the results may be invalidated