Red flags do not prove a product is bad. They tell you where to ask questions.
Hidden amounts: not disclosed here. Unverifiable testing: none shown. Big claims: this page is more careful than many. Pressure to buy: check for countdowns and scarcity. Refund terms: stated, but confirm at checkout. Mismatched timelines: guarantee 60 days, results 90 to 180.
Score each yourself.
Write down the flags you find and send the questions to the seller. A clear answer is a good sign, and silence is information. Do not buy until the points that matter to you are settled.