Short answer: Counterfeit versions have been reported on third-party marketplaces, and official purchases carry the manufacturer guarantee and customer support access — a direct, specific warning.
Why buying through the official channel matters specifically
Buying through the official channel also avoids the counterfeit listings reported on third-party marketplaces — a genuine, named risk beyond just losing guarantee eligibility.
What official purchases specifically protect
The manufacturer guarantee and customer support access are tied to official-channel purchases — protections a counterfeit or unauthorized listing likely won't honor.
💡 Worth knowing: through the official channel is the direct, stated answer to "where should I buy it?" in the formula's own FAQ.