Temporarily staying at my sister's home in Beverly Hills has come with an unexpected perk: noticeably better skin and hair. For that, I have my well-researched 16-year-old niece to thank. Her bathroom shelves are a meticulously curated collection of products—sourced from viral TikTok recommendations (most of which I’d never heard of), endorsed by her sophisticated, beauty-savvy friends in LA and NY, and vetted through her own rigorous trial-and-error experiments. Put it this way: even her is carefully chosen. Some of her favorites have now become mine, taking up permanent residence in my everyday carry-all, above. They literally spruce me up when I am cheering on my boys at their school volleyball games or heading out for lavish lunches at The Polo Lounge. The winners: this game-changing  by Benefit (guess what I have perfect brows now!), this throw-on-and-go mousse that adds a kind of texture to my hair I never knew possible plus this for my always-dry strands. This shampoo and conditioner duo by  is the only reason I am wearing my hair down more these days. She also turned me on to  (the most hydrating moisturizer pretty much ever) and this everyday-clear semi-gloss from . The cool-on-contact steel tip is everything--just like my niece.