Swix Cera Nova CH Wax

Andrew it correct. CH4 is the coldest. But while he said "if you are really concerned about top speed as soon as you start skiing, you can brush with a nylon to top it off" the way to really get the fastest skis would generally be to put some sort of graphite on before hand or at least brush with a black and then blue fine brush.

Sam, i think you may have made a typo, or were misinformed... CH4 is actually the coldest wax in the swix CH line up. they do not have the correct picture of it on the website, but it is one of the ordering options. it is essentially the same at START Green. CH6 should be similare to START Blue. if it is really cold out use CH4, then scrape and brush with a bronze brush two to three times, and that should be fine. if you are really concerned about top speed as soon as you start skiing, you can brush with a nylon to top it off.

CH6 is the coldest wax. I suggest checking the recommended wax on the swix wax wizard, If you mus error, error on the colder rather than warmer.
http://www.swixschool.com/web/wizard.html?langInput=lang2&menuInput=subM2
Then apply a few layers of the wax, using an appropriately warm iron to crayon or dribble the wax on first, then run the iron along the base of the ski, melting the wax being careful not to let the iron rest in one place (you could burn your bases) Then, after the bases have cooled scrape with a plastic scraper until little to no wax can be scraped off. Then brush 5-6 ski lengths with a bronze/mixed brush, followed by another 5-6 ski lengths using a nylon/horsehair brush. This should yield a sufficiently quick ski for most conditions.

As much as it takes to cover your whole base from snow contact at the tail to the point at the shovel, without excessive dripping onto your work bench. If you notice you are dripping every inch or so, you put too much on. If you still see uncovered base behind the hot iron, you used too little. There is no "proper amount" that you have to use, its a feel kinda thing.

But at about $1.50 per wax (+/- 25 cents) using more does not matter all that much, its decently cheap with CH. If you use LF/HF/HFBD you need to pay more attention though.

But if you really want a number, in my experience these 60-gram blocks give me about 5-8 waxes on 191cm race boards (I prefer the drop method of waxing my skis).

If you are hot waxing (the original way) just spread out drops of it evenly along the whole ski. Should end up using not too much, barely 1/3 of one little brick of the block. The "new" way of waxing is to tap the edge of the wax to your iron and rub it on then over with an iron/fiberline*. That way uses much less wax. I prefer to use the old way and one little brick of the block can last me 4/5 waxes on my 175cm race skis.

Yellow will work better for warmer conditions. If it is above 25 F then this will be perfect!

O ya, this will be fine for snowboarding. The difference in the colors is for what temperature you plan to be riding in. Click on the sizing chart and it tells you what temps are for what wax.