SkinChemists - Picky82202 review for Youth Series 1% Hyaluronic Acid Mask

Sent for this on a Facebook pop up. Only paid postage for a full size product. I had previously used the Rose Quartz moisturiser from this company so went ahedeith the purchase. Lovely packaging and arrived quickly. Nice gel like consistency, slightly cooling on application and here's where it gets confusing. On the tube it says to apply after cleansing, toning and exfoliating... Then apply product and leave on overnight 2-3 times a week. However on the box it clearly states to leave on 20 minutes then wash off Not good which is it? Decided to go with the box instructions. Didn't see any difference after 2 weeks so left it on overnight twice a week for 2 weeks... Didn't see any difference from previous application... Have sent email asking how to correctly apply