Olaplex and Filler 123 are both popular treatments. They feel similar at the basin. They cost similar money. But they fix different problems, and using the wrong one wastes the appointment.
Side by side
| Factor | Olaplex | Filler 123 Intense Moisture |
|---|---|---|
| What it does | Repairs broken disulphide bonds inside the hair shaft | Floods the cortex with moisture and proteins |
| Price (standalone) | £50 | £45 |
| Price (add-on with colour) | £35 | n/a as add-on |
| Best for | Damaged, bleached, chemically treated, snaps when wet | Dry, dull, thirsty, especially thick or curly hair |
| How often | Every 4-6 weeks for damage, every colour for protection | Every 4-6 weeks for very dry hair |
| Pairs with colour? | Yes - protective add-on | Yes - standalone after colour |
| You can feel the difference | Hair feels stronger, less brittle | Hair feels softer, smoother, more pliable |
* Prices accurate as of April 2026 and may have changed since. Confirm current pricing when booking.
Pick Olaplex if...
- Your hair has been bleached, balayaged, or highlighted regularly.
- It feels rough or snaps when you brush it wet.
- You have lost noticeable elasticity (hair feels stiff or breaks easily).
- You are about to colour or bleach (use as the £35 add-on).
- You have heat-styled aggressively in the past.
Pick Filler 123 if...
- Your hair feels dry rather than damaged.
- You have thick or curly hair that drinks moisture.
- You blow-dry frequently and the lengths feel parched.
- You want softness and shine more than structural repair.
Or both
Many clients alternate. Olaplex on colour appointments, Filler 123 in between. We will recommend a 6-8 week schedule that combines them based on what your hair actually needs.
Find us
Hair @ Number 3
Bedford Corner, W4 1LD
Chiswick, London
Tel: 0208 994 8008
Email: info@hairatnumber3.co.uk
Opening hours: Monday to Friday 10am-7pm, Saturday 9am-6pm, Sunday closed. Earlybird appointments are available on request.
The salon sits on Bedford Corner, a short walk from Turnham Green tube (District line), Chiswick Park tube, and the heart of Bedford Park. We are easy to reach from Chiswick High Road, Acton (W3), Hammersmith (W6), Ealing, and the wider west London area.