New federal regulations prohibiting liquids, gels or lotions in carry-on luggage have put the squeeze on some popular makeup and beauty products.

For those who try to avoid checking luggage, that means no mascara, lip gloss in gel form, perfume, shaving cream, liquid foundation, hair gel or toothpaste. Even massaging gel insoles are banned.

The list of banned items can change almost daily, and security personnel have discretionary powers. So you should be prepared to toss things, says one expert.

"You have to plan and carry items you can afford to throw away. It's a pain, but you don't want to take a chance," says Victoria Kirby, beauty editor for Allure magazine. "Now's the time to wear as little makeup as possible."

Kirby suggests applying long-wearing makeup before going to the airport and using a heavier face moisturizer to reduce the effects of the dry air on the plane. Prepackaged makeup wipes, cleansing cloths and blotting papers are all acceptable substitutes for liquid and cream cleansers, she says. You can even give your hair a lift with refreshing products such as Ted Gibson's Hair Sheets, available at Pure Beauty, Nordstrom and Saks Fifth Avenue.

"The only thing worse than having your makeup taken is having makeup smeared down your face because you can't touch up," Kirby says.

Tracie Hall, a human-resources consultant, recently had to turn over nearly $50 worth of makeup -- three tubes of MAC lip gloss, including one in a discontinued color -- at Bush Intercontinental Airport. Although a tube of L'Oreal lip gloss managed to slip by authorities, she says, the new rules are changing how she packs for her business trips.

"They went through my purse and pulled out everything. There are things you put in your purse that you don't even think about," said Hall, who frequently carried lotions and hair serums in sample sizes. "Now, I have to make a conscious decision to pack my purse along with my luggage when I travel."

The amount of confiscated items has decreased at Houston airports since the regulations went into effect last week. "People have gotten the word," said Richard Fernandez, a Houston Airport System spokesman. "After the first day, we haven't had many problems."

Products confiscated at the gates are thrown into the trash, Fernandez said.

The new rules also have affected some hotels, which are boosting the amount of toiletries offered to their guests. A spokesperson for Houston's Alden Hotel says there's been an increase in requests from guests for lotion and shaving cream.

"At the end of the day, you really want to use your own products. So you have to plan," Kirby said.