Lightweight Hair Serum

Details

A finishing serum for frizz and rough ends. Start with what a hair serum usually is, because the category has one composition and does not print it: cyclopentasiloxane with dimethicone, frequently ninety percent or more of the bottle, sold under words like smoothing complex, hair repair or conditioning agents. Silicone is worth being fair about. It genuinely works. It fills the gaps in a damaged cuticle, cuts combing force sharply, adds real shine and forms a barrier that gives some protection against a hot tool. What it does not do is the part the category sells: it does not repair hair, it does not feed hair, and it changes nothing about the structure underneath. Hair is dead keratin and nothing put on the outside repairs it. Silicone is a very good coating and coating is the whole of what it is, so it builds up over weeks until a clarifying wash strips it off and you start again. This bottle is the other choice. Five ingredients: caprylic/capric triglyceride 38.0 percent, squalane 26.0, cold-pressed argan oil 20.0, cold-pressed jojoba 15.4, tocopherol 0.6. That is 100.0 percent. Two of the five are cold-pressed oils and they are 35.4 percent of the bottle; the other three are derived materials and each is named for what it is derived from below, because cold-pressed oils on a badge must not be allowed to imply the whole bottle.

• Full INCI in descending order: Caprylic/Capric Triglyceride (38.0 percent), Squalane (26.0 percent), Argania Spinosa Kernel Oil (20.0 percent), Simmondsia Chinensis Seed Oil (15.4 percent), Tocopherol (0.6 percent)
• Argan at 20.0 percent, printed as a figure. With argan oil on a front panel can lawfully mean 0.1 percent, and usually does
• The squalane is fermented from sugarcane. Squalane is also made from shark liver oil, which is still a live practice in this industry, and the source is named on the certificate of analysis for every lot
• Jojoba is not an oil. It is a liquid wax ester, which is why it is the closest thing to the scalp's own sebum and why it does not go rancid the way a seed oil does
• Caprylic/capric triglyceride is fractionated coconut oil, the fraction left after the long-chain fats are taken out. It is what makes the serum light and dry to the touch rather than greasy, and it is a derived material, not a pressed one
• No silicone: no dimethicone, no cyclopentasiloxane, no amodimethicone, no phenyl trimethicone. No mineral oil, no fragrance, no masking agent, no dye, no alcohol
• No preservative, and none is needed. The bottle is anhydrous, so there is no water to support microbial growth. The tocopherol is there against rancidity, which is a different job
• Peroxide value of the finished blend 1.2 meq oxygen per kg, free fatty acid on the argan 0.6 percent, tested per lot
• Tested fill: 30 ml net, filled by weight to 27 g at a measured density of 0.900 g per ml. The 50 ml is 45 g
• Honest trade-off, and it is the one that matters: if you blow-dry or flat-iron most days, a silicone serum protects your hair better than this one does. An oil has a lower smoke point than a silicone film and gives less thermal shielding. We would rather say that than sell a silicone-free line that quietly costs you hair
• Second trade-off: less instant slip. Silicone makes hair feel smooth in about four seconds; oils take a few minutes to sit down, and two to three drops is genuinely the dose. Overdo it on fine hair and it goes flat
• Mid-lengths and ends only, never the scalp. This is 100 percent oil and a scalp does not want that left on it