Coles has L'Oreal Casting Creme Gloss Chocolate Hair Colour for $9.50 right now, worth knowing because Woolies has the same product on special at $15.40 (down from $22.00), so even with Woolies' discount, you're still paying $5.90 more per box. It's a semi-permanent colour with no ammonia, so it's gentler on your hair than a full dye, and it's been reformulated with glycolic acid for a bit of extra condition. Lasts up to 32 washes, which makes the per-wash cost genuinely cheap. If you've been putting off a colour refresh, $9.50 a box at Coles is a pretty easy reason to stop putting it off.