Really love that this Odicite gives their customers the opportunity to trail the products before committing to full size product. I wound up returning and purchasing two full size products and have more on my list to pick up. The testers last about 5-7 days on average which is more than enough time to decide to either buy the full size and continue seeing results or in my case see results after just two uses! You can’t go wrong. Shipping was fast, and their customer service is wonderful!