Most of us slather on oceans of lotions every day, but we don’t think about what might be passing the skin barrier and being absorbed into our bodies. With a developing baby in your belly, this is a vital concern.

If you plan to breastfeed, adds Johnson, continue following the guidelines noted below until you stop nursing.

Retinoids are one of the skin-care ingredients that experts, including Baumann, recommend that expectant moms stay away from.

Salicylic acid is another no-no for pregnant women. High doses of the acid in its oral form have been shown in studies to cause birth defects and various pregnancy complications.

While soy-based lotions and facial products are generally safe to use, “Soy can make the ‘mask of pregnancy’ (dark splotches on facial skin) worse, as can oil of bergamot, which is in many organic products,” she says.

Soy has estrogenic effects, which can make those dark patches, also known as melasma or chloasma, worse, Baumann explains. “The ‘active soy’ found in some product lines is okay, however, because the estrogenic components have been taken out.”

Lotions that remove your hair chemically (depilatories) or that minimize hair between shaves sound like a dream come true when you can barely reach — not to mention see — your legs. The good news is that these products are considered risk-free.

“As long as you use [chemical hair removers] as directed, they shouldn’t be a problem. It’s a topical solution that isn’t absorbed into your bloodstream, so it can’t have any effect on the baby.”

Sunscreens, including those with ingredients that penetrate the skin, are perfectly safe when you’ve got your own bun in the oven, says Baumann.

“[Ingredients] that do go deep into the skin do so in such small concentrations” that they’re not worth worrying about, says Johnson. “I personally prefer titanium dioxide and zinc oxide — they are powerful physical sunscreens and do not penetrate the skin.” “Most over-the-counter products by reputable brands are safe,” she says. “And if you are applying these products to less than 10 percent of your total skin surface, the risks of systemic effects are very low.”