What are your best tips on formulating stick/solid products for heat-hardiness for summer shipping?

🗳️ From The Question Box: “I’d love your best tips on formulating stick/solid products for heat-hardiness for summer shipping. I’ve recently started adding my products to Amazon and they require non-melting survivability at 155F for 1 hour. I’m close with my latest body butter stick formulation using sunflower wax and carnauba wax, but it sure has taken a lot of trial and error to get here! I’d love any advice/tactics/preferred ingredients/methodology you’ve got on the topic! ” – Shelly


SCI: to cook, or not to cook?

🗳️ From The Q&A Archive: “Why do some formulators recommending “cooking” the SCI for their shampoo bars. Ive seen it with both the noodles and powder. What’s the reason for this?” – Theresa Griffin