Thank you for your feedback. We’re really sorry to hear your clients experienced discomfort during treatment. This isn’t feedback we commonly receive with the Express Cysteamine system, so we’re sorry this was your experience with the treatments carried out. Even when product is kept away from the waterline, the eye area can still be very sensitive, and factors such as eye closure, pad or shield movement, vapour sitting close to the eye, or individual sensitivity can sometimes contribute to stinging or redness.