Question 1

What is CHI and who makes it?

Accepted Answer

CHI is a professional hair care brand from Farouk Systems, based in Texas. The name is short for Cationic Hydration Interlink, the technology behind its treatments. The company was founded by hairdresser Farouk Shami, who was allergic to ammonia and created an ammonia-free hair colour. The range is built around salon routines: cleanse, condition, treat, protect against heat, then style. Most products are free from parabens and sulphates and are not tested on animals.

Question 2

Which CHI line should I choose for my hair?

Accepted Answer

Match the line to your hair's condition rather than to the label you like most.

Line	Focus	Best suited for
Keratin	Protein, repair	Dry, brittle, heat-styled hair
Infra	Moisture, heat	All hair types, daily care
44 Iron Guard	Heat protection	Frequent iron or blow-dry use
Argan Oil	Oils, shine	Dull, coarse, dry hair
Silk Infusion	Leave-in serum	Frizz, rough ends

If in doubt, start with one cleansing step and one leave-in step.

Question 3

How do I use CHI Silk Infusion?

Accepted Answer

Warm a small amount between your palms, then work it through damp or dry hair, starting at the ends and moving up through the mid-lengths. Use whatever is left on the top section, from mid-length down. You do not rinse it out, and you style as usual afterwards. Keep it off the roots, since the serum can look oily there. Start with two or three drops for short or fine hair and only add more if the ends still feel rough.

Question 4

Are CHI products sulphate and paraben free?

Accepted Answer

CHI states that its products are free from parabens and sulphates and are cruelty-free, and many items are also labelled gluten-free. Sulphates are the strong cleansing agents that create a rich lather but can strip colour and moisture, so sulphate-free formulas are a sensible choice for coloured or chemically treated hair. Formulas differ per line, so check the ingredient list on the product page if you avoid a specific ingredient. We list the full ingredients for every item we stock.

Question 5

What is the difference between Silk Infusion and Keratin Silk Infusion?

Accepted Answer

Both are leave-in serums with silk, wheat and soy proteins, but they carry different weight. The regular Silk Infusion is lighter and easier to control on fine hair. The Keratin version adds natural keratin with the Keratrix complex plus jojoba oil, which makes it richer and better suited to coarse, dry or heavily heat-styled hair. Users with fine hair often report the keratin version feels greasy at normal doses. If your hair is fine, start with the regular one.

Question 6

Can I use Silk Infusion as a heat protectant?

Accepted Answer

It is not designed for that job. Silk Infusion is a reconstructing, smoothing serum: it conditions the outer layer of the hair and reduces frizz. For straighteners, curling irons and hot blow-drying, CHI makes 44 Iron Guard, a thermal protection spray with wheat proteins that you apply evenly before the heat tool. You can combine the two: heat spray first on dry hair, then a small amount of serum after styling to finish the ends.

Question 7

Is CHI suitable for curly or colour-treated hair?

Accepted Answer

Yes, and the sulphate-free formulas are a practical fit for colour, since sulphates speed up colour fade. For curls, the useful detail is balance. Curly hair usually needs more water and oil than protein, so a shampoo and serum alone can leave it feeling dry. Adding a moisturising leave-in solves this, and the CHI Argan Oil line leans more towards oils than protein. Apply serum to damp curls rather than dry ones for a more even result.

Question 8

How long does a bottle last and when should I expect a difference?

Accepted Answer

The serums are concentrated, so a small bottle often lasts months if you wash once or twice a week. On results, be realistic about the two timelines. Smoothness, shine and easier combing show from the first application, because those are surface effects. How strong and elastic your hair feels changes gradually, over several weeks of consistent use, and only lasts while you keep using the routine. Overdoing protein can make hair feel stiff, so build up slowly.

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