A complete search of the internet has found these results:
for the best results is the most popular phrase on the web.
Both "for best results" and "for the best results" have the same meaning and usage. "for best results" is often found on product labels.
3,053,766 results on the web
For the best results, put the cream on before you go to bed.
You have to use it every day for the best results.
For the best results on the test, you have to study hard.
You have to let the chicken marinate for three hours for the best results.
Be sure to read the instructions for the best results.
For the best results, use all of the company’s products.
I think that, for the best results, you should work out four times a week.
I always strive for the best results possible.
Did you know that, for the best results, you should study at least four hours a day?
1,439,663 results on the web
For best results, apply a thin coating of this liquid to the wall first.
You have to use it every day for best results.
For best results, shake well before using.
For best results, take no more than two pills per day.
I didn't want to wait any longer, but for best results, the instructions say to wait at least 24 hours.
Use two cups of flour for best results and the most delicious cookies.
For best results, call your representative whenever you have an issue.
For best results, preheat the oven before cooking.