Relaxer Retouch and Gray Coverage on a First-Time Client
Marisol, 34, books a relaxer retouch plus a demi-permanent color to blend gray in the same appointment. She is eight weeks post-relaxer and last colored three weeks ago. Her hair is fine, medium density, and feels porous from midshaft to ends; a wet stretch test shows the strand stretches slightly and does not spring back. At the nape there is a 1 cm scab she says is from scratching three days ago; the rest of the scalp looks calm. She has never been to this salon, and her previous relaxer was a no-lye box kit applied by a friend. The salon stocks three relaxers: sodium hydroxide (lye) regular strength, guanidine hydroxide no-lye, and an ammonium thioglycolate thio relaxer. She is adamant about leaving with straight, dark hair today, and the salon closes in three hours with two other clients still booked.
1. Do you perform both services today? Lay out what you will and will not do, and defend the sequence and timing.
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No - not both, and not the relaxer as booked.
Three separate problems stack up:
- Broken skin. The 1 cm scab at the nape is an open lesion. Relaxer is a strong alkaline product; applying it over abraded skin risks a chemical burn, delayed healing, and possible infection. The salon cannot reliably isolate a nape lesion during a retouch.
- Poor elasticity. A strand that stretches and does not return has lost cortex integrity. More relaxer will make it worse, not straighter in a useful way.
- Overlapping chemistry. Relaxer plus color in one sitting is overlapping chemical trauma even on healthy hair; standard practice is to separate them by at least 48 to 72 hours, and often one to two weeks, so the hair and scalp can recover.
Plan: reschedule the relaxer until the scab is fully healed (typically several days to a week), recommend a protein treatment and a light trim now, and book the demi-permanent color at least a week after the relaxer. If she refuses to reschedule, the answer is still no on the relaxer - document the refusal and the reason. Do a test strand before the future relaxer; if it indicates damage, decline the service and refer.
2. When she returns with a healed scalp, which of the three relaxers do you choose and why?
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Choose the mildest product that passes a test strand on her hair - most likely the thio relaxer or a mild no-lye, not regular-strength lye.
Reasoning by product chemistry:
- Sodium hydroxide (lye), pH roughly 12.5–13.5. Fast, thorough straightening, but the highest alkalinity on the scalp and the harshest on already porous, previously relaxed, color-treated hair.
- Guanidine hydroxide (no-lye). Gentler on the scalp because it works at a lower pH than lye, but it is more drying over time and can leave mineral residue that dulls the hair - a real drawback for fine, porous hair.
- Ammonium thioglycolate (thio), pH around 9–9.5. The mildest of the three and generally the kindest to fine, color-treated, fragile hair, but it straightens less and may not satisfy a client who wants bone-straight results.
Decision rule: fine + porous + previously relaxed + previously colored = use the lowest effective strength and the shortest realistic processing time, applied to new growth only with previously relaxed hair protected. Verify with a test strand before committing, and tell the client the trade-off between gentleness and degree of straightening.
3. How do the elasticity result and the scalp abrasion change your application technique on the return visit?
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Elasticity changes the formula and timing; the abrasion changes the prep and the application boundary.
- Prep: confirm the nape is fully healed, with no flaking or tenderness. Ask her to avoid scratching and to skip harsh shampooing and tight ponytails for 48 hours before the appointment. Do not shampoo aggressively or scrub the scalp the day of service.
- Protection: apply a barrier to the scalp, especially at the nape, and keep product off any area that still looks compromised. If anything is open on the day, stop.
- Application: new growth only, with previously relaxed hair protected with conditioner or a protective cream to prevent overlapping. Start at the nape, where processing is slowest, and work forward.
- Timing: with poor elasticity, process at the low end, check every few minutes, and smooth rather than repeatedly comb.
- Aftercare: neutralize thoroughly and verify with pH paper or indicator shampoo; follow with a protein treatment, not just conditioner, and book a trim. Recommend she stretch her retouch interval rather than shorten it.