The important concept of natural skincare is the idea of "water in oil" or "oil in water." Here, water refers to organic hydrosols used as natural toners, while oil can be cold-pressed oils used as natural serums.

Regarding hydrosols and homemade infused oils, it's important to note the source of flowers and herbs, as many are commonly treated with radiation or chemical agents.

The following analysis covers common cold-pressed oils, following the golden standard of cold-pressed oils. Cold-pressed oils are extracted from plant fruits or seeds using mechanical cold pressing, with temperatures kept low (around 60 degrees Celsius or even lower) to preserve more antioxidants and anthocyanins from the plants, aiding skin repair.

If the processing machinery is food-grade, cold-pressed oils can be used not only in skincare but also as edible oils, such as raspberry oil, pumpkin seed oil, cranberry oil, olive oil, etc., for direct consumption in salads or added to soups and porridge to avoid being destroyed by heating.

1. Sweet Almond Oil:

Most commonly used as a base oil in aromatherapy massage due to its lighter texture compared to olive oil. It's less likely to cause acne when used on the face helps skin renewal and reduces fine lines.

2. Grape Seed Oil:

A lightweight oil suitable for massage, especially for those allergic to nuts. It's safe and economical, suitable for normal, oily, and combination skin. It can be used for exfoliating the feet at home by mixing 90ml of grape seed oil with 25g of sea salt and adding 3 drops of cedarwood and 2 drops of thyme essential oils.

3. Macadamia Nut Oil:

Rich in monounsaturated fatty acids, antioxidants, and other trace elements naturally found in macadamia nuts, it prevents dryness and dehydration, has scar-reducing properties, improves eczema, and retains skin moisture. Mixing it with calendula cream yields a valuable nut oil.

4. Argan Oil:

A popular skincare oil, used for both face and hair to prevent sun damage.

It's effective for dry, cracked hands and psoriasis. It can be mixed with raspberry oil, cranberry oil, and cold-pressed coconut oil as a natural hair mask for use in salons or heated hair treatments. It can also be mixed with St. John's Wort oil for nerve inflammation.

5. Evening Primrose Oil:

Evening primrose, also known as evening star, not only has beautiful fragrant flowers but also emits phosphorescence at night.

Evening primrose oil, extracted from its seeds, contains a valuable component called gamma-linolenic acid, also known as vitamin F, accounting for about 10% of its content. It's suitable for mature and wrinkled skin, helps with skin texture, strengthens cell growth, and is also suitable for eczema and hand use.

Most cold-pressed oils and infused oils have a very short shelf life, about a year, with a few lasting up to two years. It's recommended to use homemade serums within three months and to refrigerate unused cold-pressed oils to maintain the activity of active ingredients.

All the following formulations are recommended to prioritize cold-pressed oils. After using hydrosols, apply a few drops of homemade natural serum to the face, followed by moisturizer. During the day, moderate sun protection is advised.