Hair expert Jennie Roberts shares common pitfalls to avoid when caring for curly or coily hair. These include using the wrong products, overusing products, and relying on oil as the primary moisturizer. Roberts emphasizes the importance of understanding hair texture, using products in moderation, and focusing on hydration. To combat these issues, Roberts recommends products like the SheaMoisture Manuka Honey & Mafura Oil Intensive Hydration Leave-in Conditioner for intense moisture and nourishment.