I thought I would publish a conversation with a reader who has been having problems with Shellac. Perhaps this will be of help to everyone :)
If you missed the series on using Shellac to fix a nail break they can be found here:
Part I - Introduction to gel polish
Part II - Application
Part III - Removal
So after seeing your first post about CND Shellac I went and purchased some for myself. I followed your steps and the CND steps to a t! Loved the results.. AT FIRST. Within a day, it all peeled right off!
hmmm ... First lets try to eliminate a few reasons why this may have happen.
How long did you cure the shellac for?
What UV light did you use?
Were your nails completely dry (and oil free)before application?
After you put on the shellac did you shower immediately after in hot water?
Well I checked to see what the Wattage was on the CND UV lamp and it was 36W, wouldn't it be the same then!? Plus the polish says only 10 seconds in the UV light. Anyway-- I did different numbers of layers on each nail some 2 some 3 depending on how thin or thick. I let the cure 2 minutes after each coat.
February 2, 2011 9:56 PM
Each gel product needs a specific amount of UV light intensity (output) to cure it in a specific amount of time. Although your UV light is 36W, which is the same as CND, wattage is related to how much power it uses, NOT to how much light it puts out (output). How much light intensity a UV light puts out (output) is related to the number of bulbs, their placement, and any mirror (or reflective elements) part of the lamp.
It seems that since you are not using the CND lamp (even if it is the same wattage) it does not have enough intensity to cure Shellac in the time stated by CND. The gel is not curing properly, even if it seems hard. Since my lamp is crappy and not CND's, I cure mine for way longer than what CND says. Furthermore, I put tin foil all around it to give more reflection.
Since you have product and a UV light, try to Shellac again, but this time cure 4 layers worth for 4 minutes each time. :)
BTW, I have a 6W light and it works the way I described (*4 min cure per coat), proof that wattage is not as relevant as intensity (output). Good luck!
Let me know what happens! <3
If you have any questions or problems let me know! :)