Eyelash Care Day (Matsu-iku no Hi)

What Is Eyelash Care Day?

December 19 is "Eyelash Care Day," established by D&M Co., Ltd. based on a wordplay: "ma(-)tsu (19)" suggests "matsu" (eyelash/pine). "Matsu-iku" refers to the practice of caring for eyelashes to keep them beautiful and healthy. As eyelash extensions became popular, interest in eyelash care also grew, giving rise to this concept of "raising" healthy lashes.

The Role and Characteristics of Eyelashes

• Protective function: A natural barrier that keeps dust, sweat, and UV rays out of the eyes
• Growth cycle: Eyelashes are replaced roughly every 3–5 months; excessive stress or extensions can cause them to fall out more easily
• Count and length: The upper lashes average 100–150 hairs, while the lower lashes have about 50–75

How to Practice Eyelash Care

• Eyelash serums: Specialized serums nourish the lash roots; applied nightly, effects typically begin to show after about 3 months
• Gentle cleansing: The skin around the eyes is thin and easily irritated, so use a point makeup remover and be gentle
• Mascara rest days: If you wear mascara daily, give your lashes a break with occasional no-makeup days
• Nutrition: Biotin, vitamin E, and zinc—the same nutrients that support healthy hair and nails—also help eyelash growth

Balancing Eyelash Extensions with Eyelash Care

Eyelash extensions are an easy way to add volume, but the glue used can put stress on your natural lashes. Combining extensions with proper lash care can help them last longer while keeping your natural eyelashes healthy.