Credit: Andreas Sj din

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The January issue of InStyle is here to help you prep for a great new year! Read about cover girl Jennifer Garner’s secrets to a successful marriage, discover new tips for feeling great every day and solve your biggest beauty dilemmas, from making a blowout last to getting a smudge-free manicure. Watch the video above to get a sneak peek and pick up the January issue of InStyle when it hits newsstands this Friday.MORE:Jennifer’s Hottest Red Carpet Looks!Try on Jennifer Garner’s Hairstyle!How Jennifer and More Dress Their Baby BumpsHollywood’s Hottest MomsThe Latest InStyle Cover Girls