The power of Olaplex: what it does, who needs it, and when it is not worth the money

Olaplex is the treatment clients ask for by name, mostly because they have heard a celebrity credit it with surviving a bleach job. The surprising thing is that the hype is fairly justified, as long as you understand what it actually does. It is also, in about one appointment in five, the wrong thing to spend your money on, and I will tell you that too.

I have been using it in the chair since it arrived in UK salons, first in the salons I worked in and now in my home salon in Yelling and on home visits across Cambridgeshire. Here is the plain version.

What is actually happening inside your hair

A strand of hair is a bundle of protein held together by chemical bonds. The ones that matter here are disulphide bonds, and they are what give hair its strength and its shape. Bleach breaks them. Permanent colour breaks some of them. Heat from straighteners and tongs breaks them. So does brushing wet hair roughly, and so does a tight ponytail worn in the same place every day for a decade.

Broken bonds are why hair starts to feel like straw, why it snaps halfway down when you brush it, why a blow dry drops out by lunchtime, and why the ends look thin even though nobody has cut them.

Most conditioners and masks work on the outside of the strand. They smooth the cuticle so the hair feels softer and reflects more light, which is genuinely useful, but the effect washes out. Olaplex works inside the strand. It finds broken disulphide bonds and re-links them. That is the difference, and it is why it belongs in the repair column rather than the moisture column.

The three numbers, and what each one is for

Number 1, the bond multiplier. This is the professional one and it only exists in the hands of a hairdresser. I mix it directly into your colour or your lightener, so the bonds are being repaired at the same moment the colour is breaking them. That is how I can take a client noticeably lighter in a single sitting without the hair paying the full price for it. It is the reason a colourist will sometimes agree to a jump in lightness that would otherwise be a bad idea.

Number 2, the bond perfector. Applied in the chair after the colour is rinsed, and left on for ten to twenty minutes. This is the part you feel. Hair that went into the basin feeling rough comes out feeling like hair again.

Number 3, the take-home treatment. Used once a week on damp hair before you shampoo, for at least ten minutes. It is not a conditioner and it will disappoint you if you use it like one. It carries on the repair between appointments, and it is the single best-value thing you can buy for hair you are lightening regularly.

There are other numbers in the range now, shampoos and conditioners and oils. They are perfectly nice products. They are not doing the same job as 1, 2 and 3, and I would rather you spent the money on the ones that are.

Who it genuinely helps

Anyone who bleaches, lightens or colours regularly. If you are having foils or balayage every couple of months, this is your insurance policy.

Anyone who uses straighteners or tongs most days. Heat damage is cumulative and quiet. You do not notice it until the ends start behaving differently from the roots.

Anyone growing out damage. If you have decided to keep your length while it recovers rather than cutting it all off, bond repair is what makes that plan realistic instead of a slow disappointment.

Anyone with fine hair that snaps. Fine hair has less to give in the first place, so every broken bond counts for more. On fine hair, this is the most useful thing I can put on it.

Anyone with textured or coily hair that has been through colour or heat. Bonds break the same way in every hair type, and textured hair is already working against dryness, so keeping the structure intact matters even more.

When I will not sell it to you

If your hair is virgin, uncoloured and in good condition, Olaplex will not do much for you and I will say so out loud.

Here is the distinction that saves people money: dryness is not damage. Hair can be dry and structurally perfect. It feels rough, it looks dull, it tangles, but the bonds inside it are intact. What that hair wants is moisture and a sealed cuticle, which is a Moroccanoil or a Wella mask treatment, not bond repair. Putting Olaplex on it is like taking antibiotics for a bruise.

The test I use in the chair is simple. I take a wet strand and stretch it gently. Healthy hair stretches and springs back. Damaged hair stretches and stays stretched, or snaps. Dry but sound hair feels rough and still springs back. That thirty-second check is a better guide than anything either of us could guess from looking.

Part of the consultation is working out which of the treatments on my services list your hair actually needs, and sometimes the honest answer is a better cut and a decent conditioner.

Olaplex compared with the other treatments I offer

Clients often ask me to rank them, and it does not work like that, because they are answering different questions.

A Wella mask treatment is moisture and shine. It sits on the cuticle, it makes hair feel soft and look glossy, and it lasts a few washes. It is the right choice for hair that is dull, dry or a bit frazzled from a summer of sun and swimming, and it is the cheapest of the three.

Moroccanoil is moisture with weight and slip. It is my go-to for thick, coarse or frizz-prone hair that needs taming as much as feeding, and for anyone who wants their hair to feel smoother the moment they leave. On fine hair it can be too much, so I use it sparingly or not at all.

Olaplex is structural. It is not trying to make your hair feel nice this week, it is trying to keep it in one piece for the next six months. On badly compromised hair I will often do both: Olaplex to rebuild the inside, then a mask to seal the outside, because repaired hair still needs moisture.

If you are having a keratin or smoothing treatment, Olaplex belongs before it rather than after, so we are smoothing hair that is structurally sound.

What to expect, realistically

Bond repair is not a magic trick. Split ends do not re-seal, and hair that has already snapped does not grow back from the middle. What you should expect after a Number 2 in the chair is hair that feels stronger and smoother, holds a blow dry better, and takes the next colour more evenly.

The bigger effect is cumulative. Used properly alongside colour over six months, the difference between a client who used it and one who did not is obvious to me before I have touched their hair.

How to use the take-home one so it actually works

Damp hair, not soaking. A generous amount, worked from the mid-lengths to the ends and then through the roots. Leave it at least ten minutes, longer if you are doing something else anyway. Then shampoo and condition as normal, because it is a treatment, not a wash.

Once a week is plenty for most people. Twice a week during a period of heavy lightening. Every day is a waste of a good product.

The questions I get asked most

Does it repair split ends? No. Nothing does. A split end is a strand that has come apart, and the only fix is scissors. What bond repair does is slow down how fast the next ones appear.

Can I do it at home instead of in the chair? You can use Number 3 at home and you should, but the professional Number 1 is what does the heavy lifting during colour, and that only happens in an appointment.

Will it change my colour? No. It has no pigment in it and it will not lift or deposit anything.

Is the supermarket bond builder the same thing? Some of them work reasonably well and I have no interest in being snobbish about it. What they do not do is get mixed into your lightener at the moment of damage, which is the part that matters most.

How soon before a big event should I have one? A few days is ideal. Hair that has just had a treatment blow dries beautifully, and it gives us time to fix anything unexpected.

Booking a treatment

The Olaplex, Wella and Moroccanoil treatments are all on the treatments page, alongside the Brazilian blow dry. Olaplex is available as a standalone treatment or added to any colour service, in the home salon in Yelling near St Neots and as a home visit across Cambridgeshire. The treatment itself travels with me, so a home appointment gets exactly the same products and the same time on the hair as a salon one would.

Book online, or ask me to add it when you book your colour. If you are not sure whether your hair needs repair or just moisture, send me a message with a photo taken in daylight and I will tell you honestly which one I would recommend. You can also read what clients have said about their treatments on the reviews page.