No, unless the customer can see the label 'before the sale', i.e. at the very latest before the sales contract is signed (if on paper) or the button to confirm the purchase is pressed (for on-line sales).
Disclaimer: Please note that the European Commission cannot provide a legally binding interpretation of the EU legislation, as this is the sole competence of the European Court of Justice. Any remarks from the European Commission services are without prejudice to the position the Commission might take should related cases arise in a procedure before the Court of Justice.