Bro, just to share my experience.
I have been using another local anesthesia called "Xylocaine 5%" which can be purchased from guardian or watson for numbing my dick. The numb is just like magic tissue which is numbing on the surface of your dick only, but the blood engorged shaft can still feel the impact of fucking.
Magic tissue has a faster reaction time, 5-10mins and needs to wash off before sex. It comes in 3 a pack and cost ard $30-$36 which translates to $10-$12 for ONE tissue.
Xylocaine 5% is a medically approved ointment sold at Guardian & Watson stores which costs $17-$18. Every time you only need to apply half the length of your middle finger (From tip to middle joint) over your dick head and scrotum. However, xylocaine cream takes 30mins for partial numbness, 1hr for 80% numbness and 2 hrs for surgical grade numbness. When I mean surgical grade, it means your dick feel so numb you practically cannot feel the GRIP of a BBBJ and it also mean any CUTS/SEVERES cannot be felt at all.
REMEMBER YOU MUST WASH IT OFF 100% WITH SOAP AFTER APPLYING CUZ INGESTION (By the girl) CAN LEAD TO COMPLICATIONS.
Magic tissue is not economical for the long term at all. I would suggest that lets say you would want to impress your girlfriend or you have a severe pre-mature ejaculation problem then you use Xylocaine 5% cream. Don't worry about all the side effects you read on the web that says possibility of irregular heartbeat or what because you are not having a direct injection into your blood stream. I personally have been using the cream to fuck my wife for 3-4hrs straight before I could start feeling the urge to cum for 1 year plus and nothing has happened to me.
In short, a $17-$18 tube of Xylocaine 5% is ALL you need to feel like a man. Don't bother buying magic tissue, too costly. For 1 year, having sex twice a week, I have only bought and used 3 tubes of the cream throughout 1 year.
Here's the link from Google, memorise it and go to your nearest pharmacy to purchase. It is on the shelf, you don't have to pass through the pharmacist to get it.
https://www.google.com.sg/url?sa=i&rct=j&q=&esrc=s&source=images&cd=&cad=rja &docid=SwBWQdmh19ISMM&tbnid=5QbaEhTBHig0_M:&ved=0C AUQjRw&url=http%3A%2F%2Fwww.newpharma.be%2Fpharmac ie%2Fastrazeneca%2F1343%2Fxylocaine-2-gel-tube-30ml.html&ei=8dT_Ubi5AYnyrQeZkoHYCw&bvm=bv.5016585 3,d.bmk&psig=AFQjCNEB5ANzgBUT37ZyDt2ivIQdhGVkUg&us t=1375807019215002