Active ingredient
Carnitine
INCICarnitine
4%Typical concentration
Last reviewed by BIOSAR Scientific Team, PharmD, Cosmetic Chemistry, Pharmacy practice on .
What it is
L-carnitine is an amino-acid derivative used topically in body-firming and anti-cellulite formulations. It supports beta-oxidation of fatty acids inside adipocyte mitochondria, with cosmetic claims focused on the appearance of skin smoothness and tone. Effective at 1% to 5% in body lotions and slimming gels. Pairs broadly with caffeine and other body-contour actives. No major conflicts.
Pregnancy and breastfeeding
Safe
Considered safe during pregnancy and breastfeeding.
Topical L-carnitine is considered acceptable during pregnancy and lactation per Mother to Baby. Carnitine is endogenous to the body; topical exposure produces negligible systemic increment over physiological levels.
Mechanism in detail
What Carnitine does
Amino-acid derivative that plays a role in how cells process fatty acids. Paired with Caffeine in body-firming formulas, it supports a smoother, more contoured and toned-looking silhouette over time.
Evidence
What the research says
- sebum ↓Topical L-carnitine visibly calms oily-skin shineIn a vehicle-controlled, randomized human trial, a 2% L-carnitine cream significantly lowered the skin's sebum secretion rate versus the vehicle over three weeks, helping calm the look of oily, shiny facial skin.Read the study →Peirano RI, Hamann T, Düsing H-J, et al. Topically applied l-carnitine effectively reduces sebum secretion in human skin. J Cosmet Dermatol. 2012;11(1):30-36.
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