I think those who found it not working or even causing more problems to their skin were just using the cream in a very wrong way.
http://www.cremedelamer.com/templates/products/sp_nonshaded.tmpl?CATEGORY_ID=CATEGORY5778&PRODUCT_ID=PROD2459
Even the website is explaining in full details HOW and whats the proper way to use this cream.
Its quite funny that when something is not being used in a proper way it may actually cause a diversed result.
I have seen friends who started using this cream and the brand