100ml Hair Extension Boost. This is an exceptional aftercare treatment for hair extensions as it will soften and fully polish your locks and also add beautiful depth of colour and brilliance, leaving your hair feeling completely sleek! We suggest using the boost once or twice a week by generously coating from root to tip, make sure you avoid bonds. It can be left in for up to 10 minutes, then you can rinse out thoroughly with clean luke warm water. Highly recommended bestseller product! If you require a Larger 250ml Extension Boost *** Unfortunately this product is only available to ship within the UK ***