keep it placid

Get your nearest associate to tell you when you are frowning or twisting your brows as you do….Consciously try to control your forehead and keep it placid. 

Vasta, Ann. 1947. Beauty Handbook. London. Woman's Book Club. p. 59

stringiness of a woman's throat

There is nothing that distinguishes youth from age as much as the telltale wrinkles, fat folds, or stringiness of a woman’s throat. 

Agniel, Marguerite. 1936. Creating Body Beautiful: A Woman's Guide to Charm, Poise and Personality. New York. Bernard Ackerman. p. 117

her own drab colouring

At middle age the hair is usually graying or at any rate has lost much of its life and luster. The skin loses its clearness and it apt to become dull and sallow. The older woman  may react to these changes by choosing colours that are so dull that they only serve to call attention to her own drab colouring.  

Hopkins, Marguerite Stotts. Dress Design and Selection. 1935 . New York. The Macmillan Co. p.76

for her own good

The woman of 40 who relies on good soap-and-water scrubbing and a little vanishing cream is either too busy, too optimistic or too- self-satisfied for her own good. 

Vasta, Ann. Beauty Handbook. London. Woman's Book Club. p.35

for the rest of your life

Twenty-five is the age on which the desirable weight chart is based. Doctors tell us that your best weight at this age is the weight you should maintain for the rest of your life 

Drake, Debbie. 1961. Debbie Drake's Easy Way to a Perfect Figure and Glowing Health. New Jersey. Prentice-Hall. p.102