Hi,
I have been using Gillete Mach3 blades since it was launched. Now a days, there are many duplicate or rejected blades that are being sold, whether we buy it from local medical stores or may be from Departmental Stores like Hypercity in Mumbai, Malad. I am unable to make the difference by just looking at the packing of the blades, but when i use it, there is a lot of difference, in fact it feels like i am scratching my skin rather than having a smooth shave.
Please look into this. Was this information helpful? | 
The only way u realise that da product is fake, when u use it.
Fake blades are extra sharp on the face. It gives u burning sensation/cuts during & after shaving leading to rashes.
The best thing is to get da receipt when u purchase & send a complaint along with da blade to gillette india