Mario Badescu is running a sitewide 30% off sale plus a free gift bundle when you spend $70, and that 30% off applies to almost everything right now, it is best for shoppers who want an immediate percent saving across their whole cart. The same promotion also gives you three free gifts once your order reaches $70, so it suits mid to larger purchases that can hit that threshold.
For big carts over $70: Use the 30% off sitewide promotion, since it discounts every eligible product and also triggers the three free gifts at $70. This beats using free shipping or the free facial spray alone, because those are benefits rather than a percent off every item. The sitewide 30% is applied at checkout site only.
For carts between $45 and $70: The 30% off still reduces your full order, but note that orders over $45 also qualify for a free refreshing facial spray. If you care more about cash savings, the 30% off will cut your total; if you mostly want that specific free spray, spend just over $45 and you get it automatically. Free shipping requires $35, so orders above $45 will usually get both free shipping and the spray if the shipping rule and spray rule both apply.
For carts between $35 and $45: You will qualify for free shipping on orders of $35 or more. The 30% sitewide discount still applies and will likely save more money than claiming free shipping alone, because the discount reduces the whole order. If an item in your cart is in the sale section marked up to 40% off, check whether that individual sale price is lower than the price after taking 30% off the full cart; a 40% markdown on that specific item can be cheaper than including it in a 30% sitewide order.
For small carts under $35: If your total stays below $35, you do not get free shipping or the $70 gift bundle. The 30% off sitewide remains the only percent discount available and is the best way to reduce a small order, unless you have found a sale item priced lower after its up to 40% reduction.
When shopping sale items or category deals: Sale items showing up to 40% off are discounted on their own. For a single sale item discounted 40%, that item may be cheaper than buying it as part of a 30% off order. Serums under $99, skin tools under $150, spa packages under $275 and gift sets from $12 are highlighted price ranges; compare the sale price for the exact item with the price you would pay after 30% off the full cart.
Choose the option that leaves the lower total. In practice, start with the 30% off sitewide for most baskets, then check any specific sale price that claims up to 40% off for the same product, and pick whichever gives the lower final price. Where the site states a spending threshold for a free gift or free shipping, meet that threshold before expecting that extra item or shipping waiver.