LHA (capryloyl salicylic acid)

LHA is capryloyl salicylic acid, a lipophilic (fat-loving) derivative of salicylic acid developed and patented within the cosmetics industry. Its fatty tail makes it even more oil-affinitive than standard BHA and lets it work well at skin's natural pH, so it exfoliates in a slow, targeted, cell-by-cell fashion that concentrates around the pore. The evidence is moderate. LHA is documented to exfoliate gradually with good tolerability, refining pores, texture and blemish-prone skin, and its measured action tends to be gentler than plain salicylic acid at comparable effect. It is a well-regarded but less independently studied active than the classic acids. It is best for oily, congested or blemish-prone skin that is also reactive and does not tolerate aggressive exfoliation, and for people who want pore care with less sting. It maps to pore and oil, sensitivity and acne concerns. Layering is manageable. LHA pairs well with niacinamide, hydrators and barrier support, and its gradual action makes it relatively forgiving. Still, avoid stacking it with retinoids or other strong acids in the same routine while acclimating, and build frequency slowly. Daily SPF is advisable with any exfoliant. On safety, LHA is generally well tolerated, though as a salicylic derivative it can dry or tingle if overused, so keep hydration in the routine. Being oil-soluble and pore-focused, it is usually considered compatible with fungal-acne-prone skin. Pregnancy data specific to LHA are limited, and given its salicylate lineage the cautious approach is to confirm the product with your clinician if you are pregnant.