Those tire slime kits are TERRIBLE:
1) They very often don't work
2) They are, at best, a temporary repair
3) They ruin the TPMS (tire pressure) sensor, and they gum up the tire and wheel badly
Instead, I suggest you assemble a tire plug kit:
1) BlackJack tire plug kit, with fitted case and professional tools and plugs which absolutely work
2) One or two pairs of nitrile gloves
3) Small flashlight
4) Mini pliers kit from Sears (to pull the nail out)
5) 12V tire inflator
6) Small spray bottle (empty; these leak if stored with fluids)
7) Travel size dish soap
8) 12 oz
9) AAA membership (in case of severe blowout or sidewall cut)
This is a very inexpensive, compact kit which will let you easily, professionally, permanently repair a puncture, get on the road, and stay on the road.
Each of those parts is important. You need to keep a sealed bottle of water and the spray bottle separate. Then you'll combine the water and soap in the spray bottle so you can find the leak.
I've driven a Prius Plug-in for five years with no spare, and I quickly repaired punctures twice using this set up. The soapy water is critical for small punctures; you'll otherwise have a very hard time finding the nail. You inflate the tire until you hear the air hissing out, then you spray the soapy water around the hiss until you see the bubbles.
The BlackJack kit is used by pro mechanics and it comes with complete instructions, which you should read ahead of time. Also, put a piece of thin foam in the BlackJack case to keep its contents from rattling inside your car.
I took the first photo when I'd purchased a cheapo tire plug kit. I later bought the BlackJack, which is vastly higher quality.