L'Oréal Paris Superior Preference

Bottom line

L'Oreal Paris Superior Preference is a permanent hair color that comes in 51 natural and fade-resistant shades. Some shades may not cover gray as well as others, but this varies from person to person. Like many hair dyes, the formula contains ammonia, so the smell may be overwhelming to some. If you prefer a less offensive odor, a semi-permanent formula, such as Clairol Natural Instincts (Est. $7.25) , is a better option.

Performance

Color lasts and lasts. L'Oreal Paris Superior Preference is a top choice among readers at Allure magazine, whose reviewer raves that the glossy color "lasts for weeks without fading." In one professional test, color held through 16 washings -- the equivalent of about a month of everyday washing. New York City stylist Rita Hazan says it's her favorite at-home hair color for blonde shades. She says, "It has a big selection of shades that look natural but are striking."

The L'Oreal Superior Preference formula is gentle and non-damaging, according to users at TotalBeauty.com and Walmart.com who give the hair dye high marks. The hair conditioner included in the kit leaves hair silky and shiny, which may contribute to the lack of damage caused. Most like the natural-looking colors which last four to eight weeks, depending on the shade.

Several consumers, however, say the formula doesn't cover gray well. In some cases, gray hair is more resistant to coloring, but some shades are more suitable for gray coverage than others. Experts say that's why it's so important to do a strand test before using any hair dye kit.

Ease of use

Cream-gel formula doesn't drip or run. Reviewers say L'Oréal's cream-gel formula is easy to apply because it doesn't drip like liquid dyes. One user at MakeupAlley.com says, "I found the texture of the dye was perfect because it was cream, it didn't drip or run like many of the other dyes I have tried." Editors at Allure magazine point out that the extended applicator tip is a useful feature that "reached even our most stubborn roots."

Smell

Varies by the nose of the beholder. Reviewers have mixed opinions about L'Oréal's scent. Editors at Allure magazine say the formula doesn't smell strongly, but some users say it has a strong chemical odor. It's important to note that all permanent hair dyes have a chemical odor to some degree due to the chemical reaction that is needed to change hair color.