Our all EO Blend perfumes currently contain approximately 50% essential oils and 50% base oils. This ratio could differ slightly due to strength of the oils and will be noted in the description for each blend. Our EO\FO Blend perfumes contain essential oils with 1-2% synthetic fragrance added to enhance and anchor the scent. The ratio of scent to base oil is the same for these, approximately 50\50 except as noted. We use high quality fragrance oils to achieve our desired scents when true essentials and absolutes are unavailable or too costly. (For example, true Rose Otto Oil has an average retail price of up to $ 450 per ounce. Instead, we use a bit more fragrance and Rosewood essential oil for a wonderful rose scent.) Our goal is to create scents that are as natural as possible, either all Essential Oil blends or Essential and Fragrance blends that are accessible for everyone. We use natural food grade base oils to create our perfumes and spray milks as opposed to alcohols so they will not evaporate as quickly or dry the skin. These all arrive in 1\3 ounce glass roller bottles that are convenient and easy to use. Some of these blends are 100% natural and some contain a bit of fragrance to enhance the blend. Those labeled as 100% EO may not last quite as long but they're all long lasting in volume and fun to use! Because these are all-oil blends, they can be applied to the hair or skin. Preserved with Vitamin E and Rosemary Oleoresin Extract and fresh for at least 12-18 months. Currently, Wise Folks and Isle di Capri are the only true unisex blends that we offer. We're experimenting with a few more unusual unisex blends that should be ready soon. These are 1\3 oz glass bottles, approx 3+ inches in length and 3\4 inch diameter with roller tops and a deep screw on cap, similar to a roll on deodorant. The caps will be either black or white (always black for unisex blends) and cannot be specified at this time.