New research from UCLA suggests the answer is more complicated than you might think. The researchers found that young and older adults who completed memory tasks in rooms where lavender essential oil was diffused did not perform significantly better than people in unscented rooms. But there was a catch: Older adults who encountered the scent during the first learning phase performed better than people who encountered it during the second.

— Read more in Can a scent really sharpen your memory? It's complicated at Medical Xpress.

Alexis Wilkerson has sold out plenty of products for other brands: sweaters, bangles, and sunglasses. Her latest sellout tested something different. It asked whether her audience would follow her into a new category before she owns a company in it.

The lifestyle, beauty and fashion creator partnered with the fragrance and body care brand kaer on Our Skin, a perfume oil with notes of coconut powder, Madagascar vanilla and white musk. According to her talent agency, Kensington Grey, the collaboration hit six figures in sales and sold out in less than 24 hours.

— Read more in Why Creators Are Treating Brand Collaborations as Business Auditions at Inc.