Retouch on an Abraded Scalp
Adaeze, 34, arrives at a Lagos salon for a sodium hydroxide relaxer retouch. Her last relaxer was eight weeks ago and there is about 2.5 cm of new growth. Two days ago she scratched her scalp vigorously; the stylist sees two 1-cm raw abrasions at the nape and general erythema, and Adaeze reports itching and a burning sensation. She is a bridesmaid on Saturday, four days away. The stylist proposes to 'base the scalp heavily, use the super-strength no-lye formula already mixed, and cut processing to 12 minutes' so the appointment is not lost. Adaeze has used the same brand for years and offers to sign a waiver. The salon's record card has no patch-test entry for her. The next client is due in 45 minutes and the salon has no pH strips, only blue litmus paper.
1. Should the stylist proceed with the relaxer? Justify your decision using what you know about scalp barrier function and relaxer chemistry.
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No. The abrasions have removed the stratum corneum, the main barrier to alkaline chemicals. A sodium hydroxide relaxer is strongly alkaline, roughly pH 12-13, and a no-lye guanidine or calcium hydroxide formula is still alkaline enough to produce a chemical burn on broken skin. Erythema plus itching and burning already indicate a compromised scalp. Heavy basing protects intact skin at the hairline; it cannot seal an open 1-cm wound. Reducing the processing time from the normal 15-18 minutes to 12 minutes lowers exposure but does not make the depth of penetration predictable. The likely outcomes are pain, blistering, scarring and possibly permanent follicle damage. A waiver does not transfer the professional duty of care or remove the salon's liability. Reschedule at least 7-10 days after the lesions have healed, and offer a non-chemical style before the wedding.
2. The client offers to sign a waiver and says she will accept the risk. How should the salon respond, and what should be recorded?
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The salon should still decline. Explain plainly that the waiver cannot make an unsafe service safe, and that the salon would not be able to manage a chemical burn on a broken scalp. Show her the lesions in a mirror, describe the likely reaction, and offer alternatives: roller set, braid-out, cornrows without tension, or a wig fitted without adhesive. If she chooses another salon, give the same warning and advise her to wait until the skin is intact. Record the date, the observed lesions, the service refused, the products not applied, the alternatives offered, and her decision. Ask her to sign that she received the advice, not that she accepted the risk. A patch test is good practice but would not have predicted this irritant reaction, because it screens for allergy, not for a breach in the skin barrier.
3. Suppose the relaxer had been applied and Adaeze reported a burning sensation at minute 6. Outline the immediate response and the checks before she leaves.
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Stop the clock and remove the product at once. Rinse with lukewarm, not hot, water for several minutes while protecting the eyes and ears, then shampoo with the neutralizing shampoo supplied with the kit. Lather, rinse and repeat until the lather stays white or the indicator changes, then check the hair pH with a strip; the target is about pH 4.5-5.5. Blue litmus paper only shows acid versus alkali and is too coarse for this check. Do not scrub the abrasions. Assess the scalp for blistering, weeping or spreading redness; if present, refer to a clinic the same day. Apply a bland soothing ointment, avoid tight styling and heat, and give written aftercare. Document the timing, the complaint, the products used, the pH readings and the referral.