All I can say is - Aussie 3 minute on extensions - doesn't stand a chance! You could try including after in the "fitting price! already factoring the costs in - that way they have the correct after care products at least. It can sometimes be difficult to persuade clients to look after their extensions correctly. Over the years I more or less "insist" and am not frightened of telling a client what may happen to her lovely, costly extensions if she doesn't care for them properly. I'm sure any supplier will not even consider replacement if they know what products this client has used on her extensions as it won't coincide with their terms and conditions. My consultation forms state quite clearly that there can be no "fault" or liability on my part if the correct aftercare isn't used. But if there was a problem with the hair, and I was confident they'd followed instructions to a tee (which she clearly hasn't just from what you mentioned about products) I'd happily send it back. Also, do you snip your tips when fitting? just a thought but if you've taken too much off it may cause the bonds to shed - the shedding would then cause matting and knots??? so many avenues to consider when faced with these problems xxx good luck as i know it's a difficult bridge to cross xxx