Gets the job done...I Recommend to get at least 3 box.

Update: Oct 6 2017
It been almost a year since I actually painted the bathroom and paint is holding up well. No chip or flakes and the cleaning is incredibly easy. Soap scumb and mold just wipe off with ease.

I painted my 5 foot long bathroom countertop with this product. About a month after applying 4 coats, I still occasionally get a whiff of chemical smell from the paint as it is still curing. It looks great, like a whole new counter top. The paint will scratch if treated roughly, such as dropping a can of shaving cream on the counter. It will not stand up to being covered in water for a long time, such as in a tub in my opinion. My counter top will need to be re-painted in a couple of years. At that time I will probably just buy a whole new counter top, but this fix gives me time to save for that eventuality.

This paint is difficult to use but will provide a nice finish if you are very careful.
I strongly recommend you use a good quality 3M respirator with replaceable filters when applying this paint, with open windows and a fan running. It took 3 days for the smell to leave my house. The instructions that come with the paint are not as detailed as they need to be.
First, be sure to sand your surface well and clean it. I found 220 grit sand paper worked well, and used an electric orbital sander for large areas and sanded corners by hand. I then cleaned the surface following the instructions and let it dry. This is the easy part and worked well.

After you mix the paint as instructed on the cans, you MUST use "high density foam" rollers, the WHITE ones that you can find at most home improvement stores. For the best results and to get a smooth texture, you MUST throw away your roller after each coat and put on a fresh roller. Applying multiple thin coats using a fresh, white high density foam roller for each coat works well. I learned the hard way that this paint will eat up any other brushes or rollers, and leave the degraded bristles or roller fibers and foam in the paint. Then, you will have no choice but to sand it all down and start all over, as I did. If you don't use the white high density foam rollers, you will regret it, as I did.

Give each coat at least half a day to dry for best results, because waiting only one or two hours of between coats will just result in a runny mess. When you apply a new coat, even after several hours, the solvent in the fresh paint will liquify the underlying coat. Applying multiple thin layers after giving several hours of drying time between coats helps minimize messy streaks and roller marks. Be sure and seal up your can of mixed paint between coats. Finally, you will need two kits to cover a regular sized bath tub or a large bathroom counter like mine, unless you have done this before and really know what you are doing.

Overall, I am very pleased with this product. There are so many helpful reviews already on this so I will try to keep it short.

I have a fiberglass tub with porcelain tile surround. The tub and tiles were in very good shape considering they were installed in 1974. I was more than enthused to get rid of the 1974 yellow, though!

Honestly, I followed the instructions, but I wouldn't say I did to a 'T'. I did some of the cleaning out of order, ran out of lime away so crossed my fingers and used other products like comet, rubbing alcohol and bleach. I didn't sand into oblivion until the glean was gone either. Just used the recommended grit and went over the entire surface twice. That being said, I was sort of expecting to see some issues right off the bat, but I did not. The epoxy went on smoothly for the first two coats. There were a lot of tiny bubbles but that didn't bother me. Most went away after it dried just as the instructions said they would. I had to wait a few days to do the third coat because I ran out of paint and all our local stores didn't carry the product. If I end up having any issues it will be because of that. I noticed a small patch on the bottom of the tub of what others have described that looks like bigger bubbles that have sort of risen up and may peel later. We will wait and see on that since it is such a small section.

Regarding the fumes. I was very nervous about this due to what others have posted so I made sure I had a good respirator. I put the respirator on a few minutes before I opened the paint and I kid you not, I didn't smell a thing the entire time. My eyes watered a bit but only when I had the paint tray right next to my face. I kept my pets outside and had every window open and every fan on in the house. After I was finished I closed the door to the bathroom, left the vent fan and floor fan on and sealed with a towel underneath the crack of the door. After about an hour the fumes had dissipated from the rest of the house and I had no problem sleeping or being disturbed otherwise. If you ventilate well, and have a respirator, I don't see why the fumes have to be such an issue.

I am overall pleased with the results and am crossing my fingers that after a few days of curing, the majority of the finish will be smooth. Regardless, it is a huge improvement. Really brightened up an otherwise dark space.

Good luck to all you other DIYers out there!

Absolutely amazing! We'd been living with ugly baby blue tile in our bathroom for years, and we just couldn't bring ourselves to bite the bullet for a full bathroom remodel. After a lot of thought, we decided to give this Rustoleum product a try. We read as many reviews, tips, and tricks as we could and here are a few thoughts/comments: (1) Do ALL the prep work. It takes a while, but it's worth it. We did four coats on tile and tub, and it took four kits. (2) Mix the activator really well into the paint and then let it sit for 3-5 minutes. We didn't let our first batch sit and the first 5 minutes or so was like painting with water. (3) Reviewers are not overestimating the smell. Get a good respirator mask (about $30) and open all the windows. I recommend taping over any vents in the room too so the smell doesn't get pumped around the house though the vents. (4) High density foam rollers WILL isintegrate, but it's pretty slow, so just buy extra. I think we went through about 8-10. They work great. (5) This stuff sets fast, so be prepared for a few streaks here and there. You'll do more harm than good if you try to correct too quickly. (6) Be diligent with taping everything up good before painting. This stuff is HARD to get off fixtures if you mess up. Tape well, and you can avoid that problem. (7) We used a small paint pan with liners and used fresh liner and brush with every coat. (8) The sanding step (as part of prepping the surface) is with 400/600 grit paper. You'll feel like you're not even scratching the tile, but I think this step is just to ensure the tile is completely clean (not to remove the shine of the tile). We bought a cheap hand sander, cheap sand paper, and then cut squares and made sheets for the hand sander using adhesive industrial Velcro strips on the back. Worked like a charm!

We also laid new vinyl peel and stick tile over the existing flooring (TrafficMaster brand at Home Depot for $30 all in).

Definitely follow every step of the directions. Here are my lessons learned:

1. Don't buy the roller that Amazon recommends...do not buy one that has one of the 'foam' style roller parts. Buy a roller that is a harder plastic with the white felty-like part. The foam completely disintegrated on me. The drawback to the more rigid roller is that it makes getting into the curvy parts of the bathtub/sink areas tricky. Use a paint brush for these areas.

2. Do not think that letting the product sit 'longer' than 30 min-1 hour between first and second coats will make things better. I put one coat on some things, let it sit over night, and applied the second coat the next day. The areas that I applied the second coat within the 30min-1 hour range turned out much better. Areas I waited the next day to apply were slightly 'crackly' or have more of a hammered look. My fault!

3. It smells AWFUL. Do not use this in poorly ventilated areas-sounds like duh- but seriously-add a fan to your list of items to have on hand and open windows-blow fan so air goes outward otherwise you could blow dust particles inward which will then stick to all your hard work.

4. Try to let it sit longer than the 3 days if possible and do not color your hair or wash anything with dyes in it if you need to for a while...probably another duh-moment but the paint even after 3 days seems to want to absorb any color that it comes into contact with. I noticed it isn't as sensitive after a while longer.

5. Mentally prepare yourself for a gorgeous white bathroom. I went from a strange pink/brown bathroom to white and I am amazed at how much dirt accumulates and how that awful pink/brown hid so much! Your gonna want to make bathroom cleaning appear on chore lists a bit more frequently to keep it fresh.

6. Also, works amazingly well on wall tiles! I could see this being a great solution for kitchen back splash remodels on a budget as well.

7. Splurge on a new paint brush-don't use a paint brush that you've used previously and may have some sort of residues in it. Get a new paint brush just for this-and, it may sound wasteful but throw it away after-cleaning this stuff is not fun.

No regrets. It feels like a whole new bathroom. Check out my before and after pictures. It turned out better than I expected. My entire bathroom remodel consisted of:
-Tub and Tile resurfacing kits by RustOlium (I used it on the sink, tile walls, tub, and shower walls which took me 3 boxes (2 coats on everything) and nothing to spare at the end)= about 60 dollars
-New roller and rolls (habitat for humanity restore)= 8 dollars
-Used old paint brushes-next time would buy new one just for this so I've added it= 8 dollars
-I used an aluminum 'lasagna' tray for holding the paint-I buy in bulk at costco so one= 1 dollar?
-Lime Away= 10 dollars from Lowes
-Tack cloths= 2 dollars from Lowes (one set of cloths is all you should need)
-New door handles= 8 dollars from Lowes
-White trim paint for door (already had it from previous projects)
-Gray paint for walls (already had it from previous projects)
-Stick down linoleum tiles from Lowes= 35 dollars
-New curtain rod and hooks= 18 dollars from Lowes
-New shower head and hose from Amazon with chromeo therapy (light) features=about 27 dollars total
-New sink faucet= 35 dollars at Lowes
-New shower curtain= Amazon for about 20 dollars-super neat curtain highly recommended

Project total time while working full time job= 1 week
Total Cost= approx 232 dollars...the finished look...priceless!