L'Oréal Paris launched the Youth Code Revitalizing Essence Skin Primer is known as the affordable version of the little black bottle, the formula is similar to Lancôme's small black bottle essence, the price is only one-third of the small black bottle, 30 ml is priced at 280 yuan, which is quite cost-effective.
 
The key ingredient of the Essence is also bifida yeast fermentation product lysate, which strengthens the metabolism of the stratum corneum and increases the rate of skin renewal. However, due to the different concentrations added and the different ingredients, compared to Lancôme's small black bottle, the effect of this serum is also different. L'Oréal adds more moisturizers, as well as hydroxyethylpiperazine ethane sulfonic acid and citric acid to regulate the pH value and remove dead skin cells. Alcohol, palmitoyl tetrapeptide-7 and other ingredients also have certain anti-inflammatory and astringent effects. Overall, L'Oréal's Little Black Bottle has a more effective moisturizing and oil-controlling effect, making it more suitable for oily skin, and sensitive skin should be used with caution.
 
The essence of L'Oréal Little Black is smooth, watery, malleable and easy to apply and spread. It is more refreshing to use in the summer, while it needs to be combined with other moisturizers in the autumn and winter. However, the essence aroma is too strong and not as elegant as Lancôme's small black bottle. In terms of packaging, both L'Oréal and Lancôme essences come in black glass bottles, but the dropper design is different, squeezed and pressed, which allows Lancôme to control the dosage more precisely and more conveniently.