While the range of chemicals used in modern cosmetic and personal care products makes comprehensive compatibility testing impossible, humangear consistently noticed problems with the following chemical groups/product types and recommend against using them in a GoToob+:

-Salicylic Acid (most often used in acne treatments).

-Hair serums and treatments (detanglers, relaxers, volumizers, polishers, smoothers, shine serums, etc.) including shampoos and conditioners designed to add shine or luster to hair as well as products with Argan Oil (like Moroccan hair oil).

-Silicone-based lubricants.

-DEET-based insect repellents.

-Hydrogen Peroxide.

-Sterile products. Note: Even though sterile products may be fully compatible with silicone, GoToob+ are not sterilized. Therefore, we don't recommend GoToob+ for use with fluids where sterilization may be an issue, such as contact lens solution. This includes liquid or semi-liquid prescription medications.

-Caustic, corrosive, or flammable products. Note: Many household chemicals are sold in specifically designed plastic or glass containers specified by the manufacturer and should never be decanted. GoToob+ were designed for personal care or food items you may need while traveling--not bleach, drain cleaner, fire-starters, or hydrochloric acid.