• The goal of this clinical trial is to evaluate the efficacy of the novel polyherbal lip hydrant on dryness, fine lines and color of the lips in 66Thai people aged between 18-40 years old. The inclusion criteria will include subjects with subjective complaint of dry lips.The main question it aims to answer is Does the novel polyherbal lip hydrant improve biophysical barrier of the lips?
• Participant will be asked to apply the lip hydrant or the petroleum gel once a day before bedtime, and refrain from using other lip products throughout the clinical trial period (28 days).
• Researchers will compare control group (Petroleum gel) with lip hydrant group to see whether biophysical barrier (wrinkles, colors, fine lines, roughness) improve or not.

Inclusion Criteria:

• subjects with subjective complaint of dry lips;
• agree to comply with the study protocol
• agree not to apply any other products such as lipstick, lip gloss, lip conditioner to the lips other than the test product for the duration of the study
• provide a written informed consent prior to study enrollment.

Exclusion Criteria:

• Participants those having visible skin conditions which might interfere with the outcome assessment
• having a history of sensitivities to cosmetics products, or moisturizers; - having a known or suspected intolerance or hypersensitivity to herbal products or any of its ingredient
• taking medication or under the care of a doctor for one month prior to the commencement of the study, and throughout the entire test period
• having other types of cheilitis except cheilitis simplex.