In Purley on Thames, the Keratin Treatment professionals listed here also serve the nearby towns of Pangbourne, Berks, Kidmore End, Calcot. Contact any of them directly on WhatsApp — no middleman, no commission.
About Keratin Treatment
What a Keratin Treatment Actually Changes in the Hair Shaft
A keratin treatment coats each strand with a protein film that fills gaps in the cuticle. The coating is sealed with a flat iron at around 230°C. Hair looks straighter and reflects more light because the surface is smoother. The effect is cosmetic, not structural, so the original curl pattern returns as the coating washes out over time.
Compatibility with Color-Treated or Bleached Hair
Keratin can be applied over colored hair, but timing matters. Wait at least 2 weeks after any chemical service, including dye, bleach, or highlights. Bleached hair tends to absorb more product and may darken slightly after treatment. A strand test on 10 hidden hairs is worth doing before committing to a full head.
How Much the Service Costs and Why
Home visits for short hair range from $150 to $250, while hair past the shoulders costs between $250 and $450. Price varies with the keratin brand used, hair length, and the travel fee the professional charges. Always request a written quote before booking.
Pre-Wash and Product Removal Before the Appointment
Wash hair the morning of the visit using a sulfate-free clarifying shampoo. Skip conditioner, leave-in products, oils, or dry shampoo for at least 24 hours before. The cuticle must be clean so the keratin can bond properly. Any residue blocks absorption and leads to patchy results that show within the first wash.
How Long the Appointment Takes at Home
Plan for a window of 2 hours and 30 minutes to 4 hours from arrival to rinse. The exact time depends on hair length, density, and how much product the stylist applies. Plan for an extra 30 minutes if a toner or color was done the same day.
When to Avoid the Treatment Altogether
Skip the service if your scalp shows open cuts, dermatitis, or active psoriasis. Postpone it for at least 3 months after a keratin straightening with strong formaldehyde. If you have very short hair under 10 cm, the treatment will not hold and is not worth the cost.
Red Flags That Signal a Poor Application
Hair feels stiff, straw-like, or gummy immediately after rinsing. Strands break when stretched instead of bending. The coating flakes off in white pieces within 5 days. Roots stay frizzy while lengths look flat, meaning sectioning was uneven. Any of these signs means the formula was left on too long, rinsed poorly, or ironed at the wrong temperature.
Aftercare Routine for the First 72 Hours
Do not wash, tie up, or tuck your hair behind your ears for the first 72 hours. Sleep on a silk pillowcase and avoid ponytail elastics. After day 3, switch to sodium-free shampoo and conditioner to protect the keratin seal.
Active Ingredients Commonly Used and What to Ask the Pro
Traditional formulas contain formaldehyde or methylene glycol, which release gas during ironing. Newer versions use glyoxylic acid or cysteine derivatives. Ask the professional which system they carry, request the safety data sheet, and confirm the formaldehyde level stays under 0.2% if you want the gentler option.
Average Duration of Results on Different Hair Types
On fine, straight hair, results usually last between 2 and 4 months. On thick, wavy, or curly hair, the smoothing effect often lasts from 4 to 6 months. Frequent washing, chlorine, and salt water shorten the lifespan of the coating within days.