This site's own FAQ states this specific framing directly: the brand describes this as the timeframe most likely to allow consistent, visible results.
"Most likely to allow" is worth reading as a qualified claim, not a guarantee — this site's own phrasing leaves room for individual variation rather than promising a specific outcome within the 6-month window.
This site states most customers choose the 6-bottle kit specifically for this reason — worth reading the results-framing and the bundle-size recommendation as directly linked in this site's own FAQ.