Formulation And Evaluation of Herbal Cream Incorporating Zingiber Officinale Oil

The term herb comes from the Latin word Herba , meaning grass, green stalks, or plants, while the word cosmetic is derived from the Greek Word kosmetikos, meaning skilled in arranging or beautifying. Herbal cosmetics are products formulated using plant-derived ingredients such as extracts, oils, and powders, aimed at cleansing, beautifying, and improving the skin or hair while also providing additional benefits through the natural therapeutic properties of herbs. In recent years, there has been a clear shift in consumer preferences toward natural and sustainable options, especially in personal care and cosmetic products. Herbal cosmetics have gained significant popularity because they are often viewed as safer, more effective, and more in tune with eco-friendly lifestyles. Unlike synthetic cosmetics, which may contain chemicals linked to adverse health effects, herbal formulations are generally considered gentler on the skin ^[1]. A Cream is a smooth, semi-solid preparation made by blending oil and water in the form of an emulsion. Depending on its formulation, it can be either oil dispersed in water (o/w) or water dispersed in oil (w/o). These preparations are specifically designed for application on the skin’s surface^[2].

Composition of Creams

A typical cream is made up of several key components, each serving a specific purpose in the formulation:

Water Phase: Acts as the primary source of hydration and dissolves ingredients that are water-soluble.

Oil Phase: Provides softness and smoothness to the skin while carrying ingredients that dissolve in oils.

Emulsifiers: Help blend the water and oil phases together, ensuring a stable and uniform texture without separation.

Active Ingredients: Deliver the desired skin benefits, such as reducing inflammation, fighting oxidation, providing moisture, or minimizing signs of aging.

Excipients: Improve the cream’s stability, thickness, texture, and overall feel during application^[3].

Types of Creams Based on Function, Properties, and Emulsion Type

Creams can be categorized according to their intended use, physical characteristics, and the nature of the emulsion they are formulated in:

Make-up Creams (Oil-in-Water Emulsion)

Vanishing Creams: Light, non-greasy formulations that spread easily and leave a, matte finish, often used as a base before makeup.

Foundation Creams: Provide color coverage and an even skin tone while offering mild skin protection.

Cleansing Creams, Milks, and Lotions (Water-in-Oil Emulsion)

Rich, emollient products that dissolve and lift away dirt, excess oil, and makeup residues without stripping the skin of moisture.

Winter Creams (Water-in-Oil Emulsion)

Cold Creams / Moisturizing Creams: Thicker, nourishing blends designed to protect the skin from dryness and harsh weather by locking in moisture.

All-Purpose and General Creams

Versatile creams suitable for daily skin maintenance, providing hydration and mild protection for various skin types.

Night Creams and Massage Creams

Richer, nutrient-dense formulas applied before bedtime or during facial massage to support skin repair, rejuvenation, and relaxation.

Skin Protective Creams

Formulations intended to shield the skin from irritants, pollutants, or harsh environmental factors, often forming a protective barrier.

Hand and Body Creams

Creams specially designed for larger skin areas, focusing on deep moisturization, smoothness, and softness for hands, arms, and the body^[4].

Skin

The skin is the largest organ of the human body, covering an area of about 1.5–2 m² and accounting for nearly 16% of total body weight. It functions as the first line of defense, protecting the body from external harm while maintaining internal balance.

• Structurally, the skin consists of three main layers:
• Epidermis
• Dermis
• hypodermis (subcutaneous tissue).

The epidermis is the outermost barrier composed of stratified keratinized squamous epithelium. It is thickest on the palms and soles and provides a waterproof shield to prevent dehydration and block harmful substances. It contains several specialized cells:

• Keratinocytes for structural strength
• Melanocytes for pigmentation and UV protection
• Langerhans cells for immune defense
• Merkel cells for sensory perception

The epidermis is divided into layers:

Stratum basale (basal layer): The deepest layer where keratinocytes are continuously formed. It also contains melanocytes for pigmentation and UV defense, providing the foundation for new skin growth.

Stratum spinosum (spiny layer): Provides mechanical strength and flexibility through desmosomal connections. Langerhans cells here support immunity, while keratinocytes begin producing keratin, contributing to the skin’s protective structure.

Stratum granulosum (granular layer): Keratinocytes begin to die, forming keratohyalin granules. This layer develops the skin’s waterproof barrier, preventing fluid loss and protecting against environmental stressors and pathogens.

Stratum lucidum (clear layer): Present only in thick skin like palms and soles, it adds an extra protective shield. Cells here are densely packed, enhancing resistance to friction and pressure.

Stratum corneum (horny layer): The outermost layer made of flattened, dead keratinized cells. It forms a tough barrier that prevents water loss, blocks harmful substances, and shields underlying tissues.

Dermis

Located beneath the epidermis, the dermis is composed of connective tissue with collagen and elastic fibers. It provides strength, flexibility, and hydration to the skin. Structures within the dermis include hair follicles, sweat glands, sebaceous glands,blood vessels, and sensory receptors. Collagen binds water and ensures tensile strength, while elastic fibers allow stretch. With aging or excessive stretching, fibers weaken, resulting in wrinkles or stretch marks.

Hypodermis (Subcutaneous Tissue)

The innermost layer consists of loose connective tissue and adipose cells. It serves as a cushion, insulates the body, and stores energy reserves.

Sebaceous Glands

Sebaceous glands secrete sebum, an oily substance that lubricates and protects the skin. These glands are found throughout the body except on the palms and soles, with high concentrations on the scalp, face, and groin. In some areas (e.g., lips, eyelids, nipples), they function independently of hair follicles.

Functions of the Skin:

1. Acts as a shield, protecting the body from harmful germs, chemicals, and physical injury.

2. Regulates body temperature through sweating and blood flow changes.

3. Provides the sense of touch, pain, heat, and cold via nerve endings.

4. Prevents excessive water loss, keeping the skin hydrated.

5. Allows minor absorption of substances such as creams or medicines.

6. Serves as a water-resistant barrier to safeguard internal organs^[5,6,7].

Herbal Creams

Herbal creams are typically oil-in-water (O/W) emulsion-based formulations prepared by blending an aqueous phase with an oil phase. The texture and consistency of these creams largely depend on the ratio of water to oil. A higher water content results in a lighter formulation that spreads easily and can be washed off with water, whereas a higher oil content produces a richer, thicker cream that leaves a more occlusive layer on the skin. Due to their versatility, ease of application, and ability to deliver active ingredients effectively, creams are among the most commonly prescribed and widely used topical preparations in both cosmetic and therapeutic skin care.The herbal cream developed in this study is primarily made from Ginger oil, Aloe vera gel, Vitamin?E, and Rose water^[8].

Ideal Properties of a Herbal Cream

• The cream should absorb well into the skin to deliver its benefits effectively.
• It must be safe and free from toxic effects that could harm the skin.
• The formulation should spread smoothly without leaving heaviness or greasiness.
• It should soften or melt at body temperature for easy application.
• The cream needs to be gentle and non-irritating on the skin.
• It should provide natural nourishment that keeps the skin healthy and radiant.
• The cream should be eco-friendly and free from harsh synthetic chemicals^[9].

ADVANTAGES:

• Herbal creams avoid harsh chemicals that could harm the skin.
• They are gentle and suitable for even the most sensitive skin types.
• The natural ingredients provide essential nutrients that help nourish and protect your skin.
• These creams support long-term skin health rather than just quick fixes.
• Herbal creams are environmentally friendly because they use biodegradable natural materials.
• They offer a pleasant, natural fragrance instead of strong artificial scents.
• The risk of side effects like dryness or breakouts is much lower with herbal creams.
• Many herbal ingredients have calming and healing properties to soothe irritated skin^[10].

DISADVANTAGES:

• Herbal creams usually take longer to show results compared to allopathic medicines.
• long-term use.
• It can be challenging to mask the natural taste and smell of herbal ingredients.
• Many herbal ingredients are not always easy to find or source.
• The process of making herbal creams is often more time-consuming and complex.
• There is no standardized official guideline or pharmacopoeia specifying exact procedures or ingredients for herbal cosmetics.

Benefits:

• Herbal creams help in treating pimples and acne effectively.
• They help regulate and control excess oil production on the skin.
• Using herbal creams can make your skin feel softer and smoother.
• They help maintain the natural pH balance of the skin.
• Herbal creams are generally safe and suitable for all skin types.
• They are cruelty-free and do not involve animal testing.
• Herbal creams are widely accessible and easy to find.
• They are cost-effective compared to many synthetic alternatives.
• These creams can boost the skin’s energy and vitality.
• A broad range of beneficial plant compounds can be included in herbal creams for enhanced effects^[11].

MATERIALS AND METHODS

MATERIALS

Ginger rhizomes, aloe vera leaves, rose water, and coconut oil were obtained from local markets, while all other chemicals and excipients used in the preparation of the cream were of laboratory grade. Ginger oil was prepared by first cleaning, slicing, and shade-drying the ginger rhizomes, which were then powdered and macerated in coconut oil for 72 hours. The mixture was gently heated to ensure proper extraction, followed by filtration through muslin cloth to obtain a clear oil. Rose water was purchased from a local shop.

1.Ginger Oil

Figure 02: Ginger oil

Scientific name: Zingiber officinale

Kingdom: Plantae

Order: Zingiberales

Family: Zingiberaceae

Genus: Zingiber

Species: officinale

Key constituents :

Non-volatile compounds: Gingerols, Shogaols, Paradols

Volatile oils: Zingiberene, β-bisabolene, α-farnesene, β-sesquiphellandrene, Camphene.

Ginger oil : It serves as the principal active ingredient, offering antioxidant, anti-inflammatory, and skin-revitalizing properties^[12,13,14].

2. Alovera gel

Figure 03: Aloevera Gel

Synonyms: Musabbar, Lolesara, Aloe

Biological Source: Obtained from the juice of the leaves of Aloe barbadensis Miller (also called Curaçao aloes)

Family: Asphodelaceae ,Liliaceae

Key Constituents: Lignans, phytosterols, polyphenols, acetylated compounds.

Aloe vera gel : Acts as a natural moisturizer and skin-soothing agent, rich in polysaccharides, vitamins, and antioxidants, promoting skin hydration and repair ^[15,16].

3. Bees wax

Biological source: Obtained from the honeycomb of the honeybee (Apis species) and other bees.

Family: Belongs to the Apidae family.

Chemical composition: Contains mainly carbon (73.3%), hydrogen (13.2%), and oxygen (7.5%).

Beeswax: Functions as a natural emollient and thickening agent, forming a protective layer on the skin and enhancing texture and moisture retention ^[17,18].

4. Liquid Paraffin

Provides an emollient and protective base, softening dry skin, preventing water loss, and improving the spreadability of the cream ^[18].

5. Borax

Serves as a mild emulsifier and stabilizer, ensuring smooth and uniform consistency. ^[19].

6. Vitamin E

Figure 04 : Vitamin E Capsules

Offers antioxidant and anti-aging effects, protecting the skin from oxidative stress and promoting healing^[20].

Benzyl Alcohol

Acts as a preservative and mild antimicrobial agent, maintaining the stability and safety of the formulation ^[21].

8.Rose Water

Scientific name: Rosa rubiginosa, Rosa damascena (for rose oil/water)

Kingdom: Plantae

Family: Rosaceae

Genus: Rosa

Species: Rubiginosa

Biological source: Rose oil and rose water are obtained from the flowers of Rosa damascena.

Active components: Vitamins A, C, E, and B; antioxidants; natural anti-inflammatory compounds.

Rose water: Adds fragrance and soothing properties, helps maintain skin hydration, supports pH balance, and improves overall skin texture ^[22].

Method Of Preparation

• Initially, all the glassware was cleaned and dried, and two water baths were arranged for heating.
• The measured quantity of beeswax, liquid paraffin, and ginger oil was placed in a china dish.
• This mixture was heated in the first water bath upto 70⁰ C until the beeswax melted completely, forming the oily phase.
• At the same time, the measured quantity of rose water and aloe vera gel was taken in a beaker and heated in the second water bath.
• Borax was then added to the warm aqueous mixture and dissolved completely to prepare the aqueous phase.
• When both phases reached about 70 °C, the aqueous phase was slowly poured into the oily phase with continuous stirring to form an emulsion.
• The emulsion was allowed to cool gradually, and when it reached about 40 °C, the measured quantity of vitamin E and benzyl alcohol was added one by one with proper mixing.
• Stirring was continued until a smooth, uniform cream was obtained at room temperature, and the product was finally transferred into clean containers^[18].

Evaluation Parameters

1.Organoleptic Evaluation

The prepared herbal cream was further tested for its basic physical characteristics to ensure quality and consumer acceptability. The evaluation included parameters such as color, odor, appearance and texture.

Color: The shade of the formulation was checked through simple visual observation. The recorded findings are presented in Table 2.

Odor: The fragrance of the cream was evaluated by smelling directly, and it was found to possess a characteristic herbal odor. The observations are summarized inTable2.

Appearance: The overall look of the cream, including its surface smoothness and uniformity, was assessed visually. The formulation appeared even and well-blended, with no sign of phase separation.

Texture: On application, the cream felt soft and lightweight, leaving a pleasant after-feel on the skin. It did not cause stickiness or heaviness, which indicates good user acceptability^[23].

2. Physiochemical Evaluation

pH Test:

The pH of the formulated cream was determined using a pH indicator strip. A 10% aqueous solution of the cream was prepared, and the strip was dipped into the solution. The color change was compared with the standard color chart, showing a pH in the range of 5.7 – 7.0, which is suitable for skin application.

Figure 05: pH Test

Spreadability Test:

Spreadability was evaluated by the slip and drag method using glass slides. A small amount of cream was placed between two slides, pressed with a standard weight, and then allowed to slip under the influence of a tied load. The time taken for the upper slide to move apart was recorded; a shorter time indicates better spreadability of the cream^[2,24].

Formula,

Spreadability =m×lt

Where,

m = weight tied to the upper slide (50 g)

l = length of the slide (5 cm)

t = time taken for the slide to move (seconds)

Figure 06: Spreadability Test

3.Washability

The ease with which a cream can be removed from the skin plays an important role in its user acceptability. To assess this, the formulated creams were applied evenly on the skin surface, left for a short period, and then rinsed off with plain water. The removal was observed manually to check whether the cream washed off completely or left behind residues. A good formulation should be easily washable without leaving stickiness or greasiness on the skin. The results of this evaluation are presented in Table 3.

4.Skin Irritation Test

For any topical preparation, safety is a crucial parameter. To ensure that the developed herbal cream is suitable for use, a skin irritation test was carried out. A small quantity of the formulation was applied to a clean area of skin and monitored for any adverse reactions such as redness, itching, burning, or rashes. The absence of irritation or sensitization indicates that the product is safe and well-tolerated for topical application. Since the formulation is made from herbal ingredients, it was expected to be mild on the skin, and no negative effects were observed during the study^[25].

RESULTS

Table N0: 03 Physiochemical Observations