There are a variety of ingredients and materials used in mens cologne products, some of which may be harmful. Here is a breakdown of the information found in the search results:

Positive:

• Natural colognes contain more plant-based ingredients and are free from harmful chemical compounds.
• The best natural colognes feature botanicals and essential oils that work in harmony with our body’s chemistry to create a unique and appealing fragrance.
• Mens fragrance solid cologne is made from BeesWax, SheaButter, Jojoba Oil, Coconut Oil, and Sunflower Oil, making it ideal to use on your skin.

Negative:

• Many cheap colognes, and even some nice ones, are packed with synthetic, harmful ingredients that can cause short and long-term health problems.
• Some of the toxic ingredients to avoid in colognes include parabens, synthetic dyes, and synthetic fragrances.
• Fragrance companies are not legally required to list their ingredients on the labels, and they can legally use over 400 ingredients under the single term "fragrance" to protect their trade formulas.

Ingredients or materials:

• Natural colognes may contain ingredients such as sunflower oil, beeswax, coconut oil, mixed tocopherols, rosemary extract, and organic calendula extract.
• Synthetic colognes may contain ingredients such as alcohol denat, fragrance, water, butylphenyl methylpropional, coumarin, limonene, hydroxycitronellal, alpha-isomethyl ionone, linalool, benzyl, and more.
• Mens fragrance solid cologne is made from BeesWax, SheaButter, Jojoba Oil, Coconut Oil, and Sunflower Oil.

Overall, it is important to be aware of the ingredients in mens cologne products and to avoid harmful chemicals. Choosing natural colognes or products with natural ingredients may be a safer option.