Coles has Garnier Good 3.0 Dark Chocolate Brown on sale for $8.50 today, down from $17.00, so you're saving $8.50 a box compared to what you'd normally pay. Woolies and IGA are both sitting at $9.50 this week, so Coles is the clear pick if you're planning a colour refresh at home. It's a permanent dye with 100% grey coverage and a 90% natural-origin formula that Garnier says lasts up to 8 weeks, which makes the half-price tag feel pretty decent. Stock up if this is your shade, because these half-price health and beauty deals at Coles don't hang around.