Does the formula create a cooling sensation?

Yes. It creates a gentle, refreshing cooling sensation during application.

How often can I use or reapply it?

Use it in the morning and at night, and reapply whenever your lips feel dry.

Can the container be attached to a bag or keys?

Yes. Its key-ring cap is designed for attaching the container to a bag, keys or purse.

How should I apply the lip serum?

Use the applicator to apply an appropriate amount directly to your lips, starting gently from the inner lips.

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ENTROPY

51% Lip Serum

Q: Does it feel sticky or heavy on the lips?

The texture is described as lightweight and non-sticky.

What it is: A leave-on lip serum that hydrates dry lips while adding crystal-clear, ultra-glossy shine and a gentle cooling sensation.

Hydrating care for dry lips
Crystal-clear, ultra-glossy finish
Lightweight, non-sticky feel
Key-ring portability

Net weight: 3 g

51% Lip Serum

3g ·$15.99 USD

Hydrating care for dry lips

Crystal-clear, ultra-glossy finish

Lightweight, non-sticky feel

Key-ring portability

Main active: No primary active
Intensity: Supportive

PRODUCT DETAILS

A little care, a lot of shine. This leave-on serum gives dry, delicate lips deep hydration and nourishing care while leaving behind a crystal-clear, ultra-glossy finish. There’s no stated tint, so it’s an easy choice when you want moisture and glassy shine without adding color.

The texture is described as lightweight and non-sticky, with a gentle cooling sensation as you apply it. The formula pairs an amino acid complex and glycerin for moisture support with jojoba oil for conditioning care.

Its key-ring cap adds a playful practical touch. You can attach the container to a bag, keys or purse, keeping your lip care close when dryness calls.

Learn more

GOES WELL WITH

1/3 Cotton Pad$5.89 USD

100 PRO CICA Reedle Shot Stick Pouches$9.49 USD

100 VITA-LIGHT Reedle Shot$9.49 USD

1025 Dokdo Cleansing Milk$17.99 USD

1025 Dokdo Sleeping Pack$15.99 USD

147 Barrier Cream$21.99 USD

1899 Signature Oil$163.99 USD

2X Fresh Bam Balm To Foam$24.99 USD

Hydrating lip care meets clear shine, a light feel and a gentle cooling touch.

Hydrating care for dry lips
Clear, ultra-glossy shine
Light, refreshing comfort

Key Ingredients

Abstract still life of translucent blush, plum and coral folded forms with clear droplets on a softly lit rose backdrop.

Amino Acid Complex

A blend of amino acids used to support moisture and a comfortably conditioned feel.

Glycerin

A classic humectant that helps skin hold water and feel softer and smoother.

Golden oil pours into a glossy pool on a warm ivory surface, with soft highlights, a gentle shadow and ample negative space.

Jojoba Oil

A wax-ester-rich seed oil used to condition skin and hair; direct human evidence for acne, barrier repair or other treatment claims is limited and formula-specific.

Ingredient collage featuring the applicator, honeycomb, amino-acid imagery and assorted plant oils.

Concerns & Benefits

Your Concerns

1
Dryness
Dry lips can need moisture that is easy to reapply throughout the day.
2
Dullness
When lips look flat, a clear ultra-glossy finish adds visible shine without tint.
3

How To Use

1Take an appropriate amount with the applicator and gently spread it over your lips, starting from the inner lips.
2Leave the serum on as lip care.
3Apply in the morning and at night. Reapply whenever your lips feel dry to help maintain moisture.

Close-up showing the applicator touching the lips while the tube hangs below.

Frequently asked questions

Is this a clear serum or a tinted lip product?

It leaves a crystal-clear, ultra-glossy finish. No tint is stated.

Keep learning

Customer reviews

Frequently Bought Together

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This item51% Lip Serum$15.99 USD

1/3 Cotton Pad$5.89 USD

100 PRO CICA Reedle Shot Stick Pouches$9.49 USD

Total price: $31.37 USD

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100 PRO CICA Reedle Shot Stick Pouches$9.49 USD

Total price: $31.37 USD

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ENTROPY 51% Lip Serum | Clear Glossy Lip Care | Sleepy Hello

ENTROPY

51% Lip Serum

What it is: A leave-on lip serum that hydrates dry lips while adding crystal-clear, ultra-glossy shine and a gentle cooling sensation.

Hydrating care for dry lips
Crystal-clear, ultra-glossy finish
Lightweight, non-sticky feel
Key-ring portability

Net weight: 3 g

51% Lip Serum

3g ·$15.99 USD

Hydrating care for dry lips

Crystal-clear, ultra-glossy finish

Lightweight, non-sticky feel

Key-ring portability

Main active: No primary active
Intensity: Supportive

PRODUCT DETAILS

Its key-ring cap adds a playful practical touch. You can attach the container to a bag, keys or purse, keeping your lip care close when dryness calls.

Learn more

GOES WELL WITH

1/3 Cotton Pad$5.89 USD

100 PRO CICA Reedle Shot Stick Pouches$9.49 USD

100 VITA-LIGHT Reedle Shot$9.49 USD

1025 Dokdo Cleansing Milk$17.99 USD

1025 Dokdo Sleeping Pack$15.99 USD

147 Barrier Cream$21.99 USD

1899 Signature Oil$163.99 USD

2X Fresh Bam Balm To Foam$24.99 USD

Hydrating lip care meets clear shine, a light feel and a gentle cooling touch.

Hydrating care for dry lips
Clear, ultra-glossy shine
Light, refreshing comfort