Mother and DaughterDr. Zein Obagi, medical director at ZO Skin Health, shares his five skin care secrets for mom.

1. You don't need to apply moisturizer every morning and every night

Using too much moisturizer can create a build up of dead skin cells on the skin's surface (and cause trouble for those moms with acne-prone or oily skin). Instead Dr. Obagi recommends only applying moisturizer when your skin actually feels tight or dry.

Doctor's orders: Try ZO Skin Health's Ommerse Renewal Crème ($95, at select physician's offices, spas and medispas; www.zoskinhealth.ca), which contains proven anti-aging ingredients like retinol and hyaluronic acid.

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2. Not everyone needs sensitive skin care products

Most women who think they have sensitive skin actually don't. Sometimes what we perceive to be an allergy is actually our skin reacting due to its barrier being weak. Try strengthening your skin by introducing retinol-based products to your routine.

Doctor's orders: Try ZO Skin Health's Radical Night Repair Plus ($145, at select physician's offices, spas and medispas; www.zoskinhealth.ca).

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3. Don't mix product lines

It's often better to stick with a beauty regimen from one company (cleanser, moisturizers, and other treatments) because each product is meant to deliver a certain amount of active ingredients to the skin and work with other items in the line. Mixing and matching could mean you're getting too much of one ingredient and not enough of another.

4. Apply sunscreen every day before going outside

Remember to use sunscreen under your makeup every day (even if it's cloudy), and apply at least 30 minutes before going outside so that it is absorbed into your skin properly. Make sure it contains sun-blockers like titanium dioxide and zinc oxide.

Doctor's orders: Try ZO Skin Health's Oclipse Sunscreen + Primer-Broad Spectrum SPF 30 ($65, at select physician's offices, spas and medispas; www.zoskinhealth.ca)

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5. All products have an expiry date

No matter how much you paid for it, no product lasts forever, so toss them once they are past their prime (especially if they have changed smell or colour). Anti-aging ingredients like vitamin C, retinol and glycolic acid often lose their potency over time, so always store according to the label to get the most out of them.