Many folks are under the impression that red hair simply grows out of your head.

That’s true for a fortunate few. But most of us need help in attaining chestnut, auburn or copper tresses — and in keeping the color from fading soon after we stroll, head held high, out of the salon. Take it from me, a redhead who can attest that those stubborn whitish hairs at the temple can resurface as soon as 10 days after coloring.

That’s because red hair color, alas, doesn’t last as long as blond and brunette colorants.

Now, there’s a super salon line formulated to restore and refresh all shades of red and copper color-treated hair. Think of yourself as an eternal Rita Hayworth. Flawless. Glorious. And seemingly effortless.

Naturally, the idea comes from a creative brain located just under a mane of red hair.  Ruth Roche is artistic ambassador of Pureology, whose products include such ingredients as lycopene extract, the powerful antioxidant found in tomatoes and other red fruits and veggies.

The line includes a full range of products, from shampoo and conditioner to treatments that infuse hair with red tones between visits to your favorite hairdresser. Expect color that is still going strong after 30 shampoos.

Reviving Red Sham’pOil gives hair a super boost, replenishing hair and sealing the cuticle. MSRP: $29 for 8.5 oz. Red Reflect Enhancer and Copper Reflect Enhancer ($40 each) come in individual tubes, ready for weekly use to refresh hair. Reviving Red Illuminating Caring Oil makes hair shiny. Just put a little in your palm and smooth through damp or dry hair. MSRP: $32 for 5.2 oz.

Pureology is sold at salons. Ask your hairdresser about the line.