A Botox Spock brow is a known, correctable botulinum toxin side effect, usually fixed with a small touch-up injection into the active lateral frontalis. Brow ptosis has been reported from less than 1% to 5%, and one study of 25 patients found 22 developed brow ptosis after forehead rhytide injections, with a mean change of 2.3 mm, according to a major cosmetic complication review . You look in the mirror after your appointment and notice that the outer edge of one or both brows seems to point upward. The effect can feel startling, especially if you wanted a softer, more open expression rather than a permanently surprised one. The good news is that a peaked brow usually reflects a temporary muscle-balance issue, not an allergy, permanent damage, or a failed product. What Is a Botox Spock Brow Ten days after Botox, a patient checks her reflection and sees one brow arching skyward. The outer tail looks sharper than it did before treatment, while the center of the ...