Although the order arrived very quickly , for which i thank you, the first pack i have used i found them to not last as long as usual and not as strong. Also the k2 is not as good as the others i have had i have had in the past. I was wondering if there is a production problem. I have been having trouble sourcing these refills , i usually buy them from Asda but they never seem to have had any for the last 2 weeks. I have ordered the same again for my Niece and will review again .