If a little bit is good, then a lot must be better, right? Not when it comes to your beauty products. According to experts, the products we use on a daily basis adhere to the Goldilocks principle. Too small of a dollop may mean your anti-aging serum may not work at all, but too big of a blob of deep conditioner could mean greasy hair and split ends (not to mention a depleted bank account).

Here, skin care expert Annet King, director of global education at Dermalogica and hairstylist Arturo Swayze for Arturo Salon and René Furterer show us just how much product you should be applying to make sure it's working -- but not sabotaging your beauty routine.

Serving size: A silver dollar

Too much leave-in conditioner will leave hair limp and dull, says Swayze. Start at the ends and avoid the roots. You may need more product if your hair is longer than a few inches past your shoulders and less if it's shorter.

Serving size: An apricot

"When deep conditioning, your hair should be thoroughly coated and then some," says Swayze. After applying, cover hair with a plastic cap, which allows the conditioner to penetrate more into the hair shaft.

Serving size: A grape

"Using too much could ultimately dry your hair out," says Swayze. Concentrate the product on the most damaged areas.

Serving size: A quarter

More than a quarter and you risk crunchy hair that's hard to style. For smooth application, massage the gel in your hands first to avoid clumps.