Ingredient Stability During Shipping

It's understandable to be concerned about ingredient stability, especially when you're new to formulating. You're right that temperature significantly affects the shelf life of ingredients.

Heat accelerates chemical reactions, including the degradation of active compounds. So, if ingredients are exposed to high temperatures during the 2-3 days of shipping without refrigeration, their degradation rate will indeed increase compared to being stored in cool, ideal conditions.

However, whether this short period of exposure significantly impacts the usability depends on the specific ingredient and the actual temperature encountered. Many common cosmetic ingredients are formulated to be reasonably stable at room temperature for typical transit times. While not ideal, a few days without refrigeration might not render a product completely ineffective, but it could potentially shorten its overall maximum shelf life.

Regarding the "60 days in syringe" mention: A 60-day shelf life for a raw cosmetic ingredient is unusually short. Most raw ingredients, when stored correctly in their original packaging, have a shelf life of 1-2 years or even longer. It's possible the 60 days refers to the stability after the product has been opened, transferred to a syringe, or perhaps relates to a specific type of ingredient or packaging. It's unlikely that the total shelf life from the manufacturing date is only 60 days if the ingredient is intended for use in cosmetic products that typically have a 2-year shelf life.

Recommendation: Once you receive your ingredients, store them immediately according to the recommendations provided by the supplier (usually in a cool, dark place, or refrigerated if specified) to ensure they maintain their quality for as long as possible.